It's once of life's great questions - just how does a worldwide superstar spend her 31st birthday?
By hiring a fat off yacht and sailing across the Med with your super cute family. That's how.
Beyonce has been celebrating her birthday with a family, ocean-based adventure.

Her and Jay-Z have hired a superyacht to mark the occasion and were spied making the most of some QT together on the open seas. Jealous much.

But poor Bey totally had her thunder stolen on her big day by daughter Blue, not that we think she'll mind.

Can we just say how adorable this child is? Too late, we just did.
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> IN PICS: BEYONCE'S STYLE EVOLUTION
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1998
Kelly Rowland, Beyonce, LeToya Luckett and LaTavia Robertson at the Shine Auditorium in Los Angeles.
1998
Beyonce rocked a camouflage dress at a live performance at HMV.
2000
On stage at Party in the Park.
2000
Destiny's Child hit the Grammy Awards in all white.
2000
Destiny's Child wear matching yellow outfits.
2000
Beyonce performed at the VH1 Vogue Fashion Awards.
2001
Destiny's Child wear denim, crop tops and rhinestones.
2001
The singer opted for sheer and sparkly at the Grammy Awards.
2002
Doing her best Foxxy Cleopatra impression in a glittering gold dress.
2003
Looking lovely in a full length floral dress at the VH1 Divas Duets.
2003
She rocked the LBD for the Entertainment Industry Foundation Party.
2003
Perhaps not her finest fashion moment. Beyonce at the NBC Today Show Summer concert series.
2003
She dazzled the crowds at the 2003 MTV Video Music Awards.
2004
She dressed down in UGGs to announce the pre-game activities for the Super Bowl.
2004
Beyonce launching her Tommy Hilfiger fragrance.
2004
Reunited with Michelle Williams and Kelly Rowland at the 2004 Jingle Bell Ball.
2005
Beyonce got glammed up for the opening of Jay-Z's 40/40 Club in Atlantic City.
2006
Beyonce backstage at the MTV's Total Request Live.
2006
Who else could look this good in a nude mini dress? Another backstage pose after her appearance on MTV's TRL.
2006
Beyonce rocked canary yellow at a chaity event.
2007
Anothe glam look for the opening of Jay-Z's 40/40 Club, this time in Las Vegas.
2008
One of the singers finest red carpet moments. She stepped out in an Armani gown at the Metropolitan Museum of Art Costume Institute Gala.
2009
Beyonce topped the best dressed lists at the Golden Globe Awards in an Elie Daab gown teamed with a dazzling diamond necklace by Lorraine Schwartz.
2010
Beyonce looked white hot at the launch of the Lorraine Schwartz's 2BHAPPY jewellery collection.
2011
The singer announced her pregnancy at the 2011 MTV video Music Awards. She looked stunning in this asymmetrical Lanvin gown.
2011
Beyonce at the launch of her Pulse fragrance.
2011
Beyonce at the Pulse fragrance launch.
2011
Pregnant Beyonce wore a black maxi when hosting the screening of Live at Roseland.
2012
Beyonce attends the Costume Institute Benefit at The Metropolitan Museum of Art.
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The Huffington Post UK | By Ashley Percival Posted: 05/09/2012 15:48 Updated: 03/10/2012 16:02