It may be Red Nose Day on Friday, but Simon Cowell was not seeing the funny side at a gala in aid of Comic Relief last night.
The music mogul failed to crack a smile as he was joined by best pal Sinitta at a gala performance of 'The Book Of Mormon'.
The pair were joined by Simon's 'Britain's Got Talent' co-star David Walliams and his pregnant wife Lara Stone, who was looking radiant in a loose white frock which hid her bump.
'The Book Of Mormon' Comic Relief performance
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(01 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Lara Stone (L) and David Walliams attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(02 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Kate Moss (L) and Tim Minchin attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(03 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Julia Carey (L) and James Corden attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(04 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Jameela Jamil attends a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(05 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) (L to R) Claudia Winkleman, Emma Freud, Elisabeth Murdoch and Matthew Freud attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(06 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Helena Bonham Carter (L) and Tim Burton attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(07 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Natalia Vodianova (L) and Antoine Arnault attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(08 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) (L to R) Claudia Winkleman, James Corden and Sonia Friedman attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(09 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Lara Stone (L) and David Walliams attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(10 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Simon Cowell (L) and Sinitta attends a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(11 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Ben Miller attends a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(12 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Elisabeth Murdoch (L) and Kate Moss attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(13 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Tim Minchin (L) and Jameela Jamil attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(14 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Keith Tyson attends a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(15 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Tim Minchin (5L) and Jameela Jamil (3R) pose with cast at a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(16 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Emma Freud (L) and Richard Curtis attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(17 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Helena Bonham Carter (L) and Tim Burton attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(18 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Julia Carey (L) and James Corden attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(19 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Cast members Jared Gertner (L) and Gavin Creel attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(20 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Lara Stone (L) and David Walliams attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(21 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Simon Cowell (L) and Sinitta attends a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(22 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Julia Carey (L) and James Corden attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(23 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Simon Pegg attends a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(24 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Lauren Kemp (L) and Gary Kemp attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(25 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Ben Miller attends a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(26 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) (L to R) Claudia Winkleman, Emma Freud, Elisabeth Murdoch and Matthew Freud attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(27 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) (L to R) Ben Miller, guest, Lauren Kemp and Gary Kemp attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(28 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Lara Stone (L) and David Walliams attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(29 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Elisabeth Murdoch (L) and Kate Moss attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(30 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) (L to R) Ben Miller, guest, Lauren Kemp and Gary Kemp attend a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
'The Book Of Mormon' Gala Performance In Aid Of Red Nose Day - Drinks and Curtain Call(31 of61)
LONDON, ENGLAND - MARCH 13: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME. MANDATORY CREDIT PHOTO BY DAVE M. BENETT/GETTY IMAGES REQUIRED) Sonia Friedman attends a gala performance of 'The Book Of Mormon' in aid of Red Nose Day at the Prince Of Wales Theatre on March 13, 2013 in London, England. (Photo by Dave M. Benett/Getty Images) (credit:Getty Images)
The Book of Mormon Red Nose Day Gala - London(32 of61)
Sadie Frost attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(33 of61)
Sadie Frost attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(34 of61)
Sadie Frost attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(35 of61)
James Corden attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London (credit:PA)
The Book of Mormon Red Nose Day Gala - London(36 of61)
Jameela Jamil and Olivia Hallinan attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(37 of61)
Lenny Henry and Jameela Jamil attend The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(38 of61)
Claudia Winkleman attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(39 of61)
Harry Enfield attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(40 of61)
Ben Miller arrives at The Book of Mormon Red Nose Day Gala held at the Prince of Wales Theatre. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(41 of61)
Lenny Henry and Jameela Jamil attend The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(42 of61)
Kirstie Allsop attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(43 of61)
Tim Minchin attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(44 of61)
Harry Enfield attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(45 of61)
Jack Dee arrives at The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London (credit:PA)
The Book of Mormon Red Nose Day Gala - London(46 of61)
Ben Miller arrives at The Book of Mormon Red Nose Day Gala held at the Prince of Wales Theatre. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(47 of61)
Olivia Hallinan attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(48 of61)
Richard Curtis and Emma Freud attemd The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London (credit:PA)
The Book of Mormon Red Nose Day Gala - London(49 of61)
Gary Kemp and Lauren Kemp attend The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(50 of61)
Tim Minchin attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(51 of61)
Olivia Hallinan attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(52 of61)
Ben Miller attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London13th February 2013. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(53 of61)
Tim MInchin and wife attend The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London 13th March 2013 (credit:PA)
The Book of Mormon Red Nose Day Gala - London(54 of61)
Tim Burton and Helena Bonham Carter attend The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(55 of61)
Michael MacIntyre attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(56 of61)
Simon Cowell and Sinita attend The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London (credit:PA)
The Book of Mormon Red Nose Day Gala - London(57 of61)
Rob Brydon attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(58 of61)
Trey Parker attends at The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London (credit:PA)
The Book of Mormon Red Nose Day Gala - London(59 of61)
Sinitta attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London (credit:PA)
The Book of Mormon Red Nose Day Gala - London(60 of61)
Michael MacIntyre attends The Book of Mormon Red Nose Day Gala, the Prince of Wales Theatre, London. (credit:PA)
The Book of Mormon Red Nose Day Gala - London(61 of61)
Michael MacIntyre attends The Book of Mormon Red Nose Day Gala at the Prince of Wales Theatre in London. (credit:PA)
Other celeb names at the bash included Kate Moss, James Corden and Claudia Winkleman.
But despite Simon's sour face last night, he has already done something funny to raise money - he is starring in a sketch with David set to air as part of Comic Relief on Friday.
Pictures released earlier this week gave a sneak peek and showed the pair getting 'married' following their long-running 'BGT' bromance...
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