Two of the world's hottest females Rihanna and Kate Upton peeled down to their bikinis yesterday, and naturally it was only a matter of time before they were sharing pictures with their fans.
Well, they are celebs of the Instagram era, right?
RiRi was taking the chance to catch some rays in between shows on her Diamonds world tour, and snapped herself sipping on a cocktail in a blue bikini.
Rihanna
Meanwhile, 'Sports Illustrated' model Kate Upton sent temperatures soaring even more with her selfie, where she posed for (her own) camera in a frilly white bikini.
Kate Upton
But which beach babe comes out on top? Well, dear readers, we'll leave that up to you...
100 Celebrity Bikini Beach Babes
Helen Flanagan (01 of100)
(credit:Bare Media)
Amy Childs(02 of100)
(credit:Splash)
Alexandra Burke (03 of100)
(credit:Splash)
Rihanna(04 of100)
(credit:Splash)
Halle Berry(05 of100)
Pic: Big Pictures
Heidi Klum (06 of100)
(credit:Heidi Klum/Twitter)
Julianne Hough (07 of100)
(credit:Flynet)
Eva Longoria(08 of100)
Pic: Big Pictures
Paris Hilton(09 of100)
Pic: X17
Ireland Baldwin(10 of100)
(credit:Ireland Baldwin/Twitter)
Carmen Electra (11 of100)
(credit:Coleman Rayner)
Geri Halliwell(12 of100)
Pic: Bauergriffin
Fearne Cotton(13 of100)
(credit:Splash)
Chloe Sims (14 of100)
(credit:Flynet)
Kate Moss (15 of100)
(credit:Flynet)
Jodie Marsh(16 of100)
(credit:Jodie Marsh/Twitter)
Louise Thompson (17 of100)
(credit:Christopher Bissell)
Tulisa (18 of100)
(credit:Splash)
Kim Kardashian(19 of100)
(credit:Splash)
Hayden Panettiere (20 of100)
(credit:Flynet)
Katy Perry(21 of100)
(credit:Splash)
Gisele(22 of100)
Pic: Big Pictures
Jessica Alba (23 of100)
(credit:Flynet)
Amy Childs(24 of100)
(credit: Splash)
Kate Bosworth(25 of100)
Pic: Big Pictures
Alexandra Burke(26 of100)
Pic: Big Pictures
Tulisa(27 of100)
(credit:Splash)
Britney Spears (28 of100)
(credit:Flynet)
Michelle Rodriguez(29 of100)
(credit:Splash)
Kelly Rowland(30 of100)
Pic: X17
Rachel Bilson (31 of100)
(credit:Flynet)
Alessandra Ambrosio(32 of100)
(credit:WENN)
Helen Flanagan(33 of100)
(credit:Bare Media)
Hedi Klum(34 of100)
Pic: Rex
Paris Hilton(35 of100)
(credit:Splash)
Jennifer Aniston(36 of100)
Pic: Big Pictures
Beyonce(37 of100)
Pic: JPI
Anne Hathaway(38 of100)
(credit:Splash)
Coleen Rooney(39 of100)
(credit:Splash)
Janice Dickinson(40 of100)
(credit:Splash)
Alessandra Ambrosio(41 of100)
(credit:Instagram)
Lindsay Lohan(42 of100)
(credit:Splash)
Alicia Keys (43 of100)
(credit:Splash)
Amy Childs(44 of100)
(credit: Splash)
Jessie J (45 of100)
(credit:Jessie J/Instagram)
Anne Hathaway(46 of100)
(credit:Flynet)
Ashlee Simpson (47 of100)
(credit:Flynet)
Ashlee Simpson (48 of100)
(credit:Splash)
Carmen Electra(49 of100)
(credit:Coleman Rayner)
Jennifer Lopez (50 of100)
(credit:Getty)
Chloe Sims(51 of100)
(credit:Flynet)
Tulisa(52 of100)
(credit:Splash)
Denise Richards (53 of100)
(credit:Splash)
Eva Longoria (54 of100)
(credit:Splash)
Gwen Stefani (55 of100)
(credit:Flynet)
Denise Richards(56 of100)
(credit:Splash)
Louise Redknapp(57 of100)
(credit:Splash)
Helen Flanagan(58 of100)
(credit:Bare Media)
Naomi Watts(59 of100)
(credit:Splash)
Michelle Rodriguez(60 of100)
(credit:Splash)
Jade Pinkett Smith (61 of100)
(credit:Splash)
Jennifer Aniston (62 of100)
(credit:Flynet)
Mel B (63 of100)
(credit:Splash)
Lucy Mecklenburgh (64 of100)
(credit:Splash)
Jessica Alba (65 of100)
(credit:Flynet)
Kelly Brook(66 of100)
(credit:WENN)
Pink (67 of100)
(credit:Flynet)
Kate Hudson (68 of100)
(credit:Flynet)
Katherine Heigl (69 of100)
(credit:Splash)
Beyonce (70 of100)
(credit:Beyonce/Tumblr)
Reese Witherspoon(71 of100)
Pic: Big Pictures
Alessandra Ambrosio(72 of100)
(credit:WENN)
Naomi Campbell (73 of100)
(credit:Flynet)
Katie Holmes (74 of100)
(credit:Bauer Griffin)
Lea Michele (75 of100)
(credit:Flynet)
LeAnn Rimes (76 of100)
(credit:LeAnn Rimes/Twitter)
Lindsay Lohan (77 of100)
(credit:Bauer Griffin)
Julianne Hough(78 of100)
(credit:WENN)
Mariah Carey (79 of100)
(credit:WENN)
Janice Dickinson (80 of100)
(credit:Flynet)
Rihanna(81 of100)
(credit:WENN)
Michelle Heaton (82 of100)
(credit:Splash)
Michelle Rodriguez (83 of100)
(credit:Bauer Griffin)
Miley Cyrus (84 of100)
(credit:WENN)
Kelly Brook(85 of100)
(credit:WENN)
Michelle Heaton(86 of100)
Pic: Big Pictures
Naomi Watts (87 of100)
(credit:Flynet)
Nicole Richie (88 of100)
(credit:Flynet)
Rachel Bilson (89 of100)
(credit:Flynet)
Alessandra Ambrosio(90 of100)
(credit:WENN)
RIhanna (91 of100)
(credit:Flynet)
Selena Gomez (92 of100)
(credit:Bauer Griffin)
Kim Kardashian(93 of100)
(credit:WENN)
Whitney Port (94 of100)
(credit:Splash)
Coleen Rooney(95 of100)
(credit:WENN)
Julianne Hough(96 of100)
(credit:WENN)
Victoria Silvstedt(97 of100)
(credit:WENN)
Alessandra Ambrosio(98 of100)
(credit:WENN)
Sam Faiers(99 of100)
(credit:WENN)
Jennifer Lopez(100 of100)
(credit:WENN)