Vanessa Hudgens, 25 Vanessa is proof that putting those extra hours in at the gym pays off as the High School Musical star looks slender and toned in her swimwear.

Julianne Hough, 25 Julianne’s curves make her the envy of every woman – we’re certainly jel of her body in this teeny bikini!

Tulisa Contostavlos, 25 Tulisa’s going through a hard time right now thanks to her troubled personal life, but at least the former X Factor judge is taking care of her body.

Lindsay Lohan, 27 Her weight has had its ups and downs but LiLo’s looking super-slim at the moment – good work!

Rosie Huntington-Whiteley, 26 Rosie proves she’s the ultimate supermodel, even on her days off – jealous much?

Lena Dunham, 27 The Girls creator flaunts her impressive curves by sporting a bright blue bikini. No wonder Lena’s always getting her kit off in her hit US TV show.

Sharni Vinson, 30 Home and Away actress Sharni looks incredibly athletic as she shows off her flat abs and lithe muscles in this chic halter-neck bikini.

LeAnn Rimes, 31 LeAnn’s battled with weight issues in the past but she’s put all that behind her and now she has this hot beach body!

Alessandra Ambrosio, 32 Whether she’s on the catwalk or on holiday, the Brazilian model sizzles with her picture-perfect shape.

Serena Williams, 32 Knocking a tennis ball around for a living has gifted Serena with an Amazonian physique that wouldn’t look out of place on the female bodybuilding circuit.

Jessica Alba, 32 It has to be said that Jessica’s bikini bod is close to perfection. Toned abs, ample curves and tanned skin. She’s gorge!

Alicia Keys, 32 Alica’s perfectly bronzed bod is the envy of every woman! The singer works hard in the gym to keep her trim figure – she doesn’t just look like this naturally!

Paris Hilton, 32 The perfectly petite Paris has really never had any weight issues and has managed to maintain her slim hips.

Katherine Jenkins, 33 Squeezing into those tight frocks when she has to perform must be enough motivation for Katherine to keep her gorgeous physique slim and slender.

Bethenny Frankel, 43 The Real Housewives star has long been an advocate of healthy lifestyles – and it shows.

Courteney Cox, 49 She’s five years older than her friend Jen, but Courteney’s hot bod certainly looks as young, with curves in all the right places.

Janice Dickinson, 58 While her face has been surgically altered, Jan’s trim torso needs no work whatsoever. We hope we look as good at her age.

Helen Hunt, 50 The ever-active Oscar winner keeps her youthful body toned through yoga and a number of water sports.

Paula Abdul, 51 Tiny Paula has an amazingly slim figure and is so lightweight that she might float away if she’s not careful.