1 of 31
She might admit to sometimes feeling moody, but the mom-to-be shows off a sunny smile as she takes a dip off the Miami shore in a striped cover-up and aviators.
2 of 31
Stone shows off rock-hard abs while cooling off on a luxury yacht in Sardinia, Italy.
3 of 31
The Hills star hits the Malibu beach in a simple strapless black romper and lanky hair.
4 of 31
might be Playboy’s current cover girl, but Spencer’s little sister shows off her own curves in red bikini bottoms and a white triangle top in Malibu.
5 of 31
’s girlfriend stays stylish while pregnant with their second baby in an orange bandeau bikini top and low-slung maxi skirt – perfect for highlighting her growing bump as the family took a Labor Day walk in Malibu.
6 of 31
gets into the swing of it on a Malibu beach, covering up a tie-dyed suit with a cinched gray cover-up – plus a buffalo-plaid hat – while pushing her fashion-conscious son Kingston in the shade.
7 of 31
While sticks to the shore, her rocker husband hits the Malibu surf with board in hand, wearing long-and-low printed trunks.
8 of 31
The Hills’ newest star might be making waves on the show – but at a Malibu beach, she’s happy to stay shorebound in her basic black bikini and sheer tie-dyed top.
9 of 31
MATTHEW MCCONAUGHEY & CAMILA ALVES
The and his model girlfriend make it a family day at a Malibu beach, with Dad toting son Levi in one hand and a paddle in the other, while Camila stays stylish, wrapping her striped bikini bottoms with a crocheted shawl.
10 of 31
Ditching her 90210 zip code, the actress heads to Las Vegas to strike a pose at the Wet Republic pool party in a fuchsia monokini with a tiny sarong knotted at her hips.
11 of 31
The former Spice Girl adds a dash of heat to a day in Saint-Tropez in a gold bikini that shows off her super-cut body, while balancing atop the shoulders of her aristocrat boyfriend, Henry Beckwith.
12 of 31
Nothing Scary here! Geri’s former Spice Girl bandmate shows off a perfectly ripped body while yachting with her husband (not pictured) in Cartagena, Colombia.
13 of 31
The actress – and former Miss Teen USA – proves she’s lost none of her envy-inspiring curves as she shows off her toned body in a sizzling bikini near L.A.
14 of 31
ANTONIO SABATO JR.
The dating show star braves the waves in body-hugging trunks and pumped-up pecs at Leo Cabrillo Beach in Malibu.
15 of 31
Even at the beach, the celebrity stylist is ahead of the fashion curve. Draped in a Polynesian-print pareo in Malibu, Rachel keeps her best accessory – husband Rodger Berman – right by her side.
16 of 31
Relaxing after her performance at the Miss Universe pageant, the hits the waves in the Bahamas in a patterned string bikini.
17 of 31
The shows off her smoking-hot new body poolside at the Ritz Carlton in Marina del Rey with a sky blue-and-teal bikini and orange shades.
18 of 31
KANYE WEST AND AMBER ROSE
The might keep covered up at the Fontainebleau in Miami in a cool white button-down and trousers, but his model girlfriend isn’t shy about showing off her curves – and a few tattoos – in a bright orange thong bikini as they hit the shore.
19 of 31
Even a day at sea doesn’t stop the from putting fashion first. Heading for a cruise on designers Domenico Dolce and Stefano Gabbana’s yacht in Portofino, Italy, Madonna slips a sheer lace dress over boy shorts, adds strappy shoes, a wide-brimmed hat and a requisite hand fan – plus her sexiest accessory: good pal Jesus Luz.
20 of 31
A simple white bikini and snorkel gear are all this needs to have fun on board a luxury yacht while vacationing in Ibiza.
21 of 31
Taking in the Malibu sun, the sizzles in a white bikini top and navy blue bottoms – plus killer high heels – at the Sierra Mist Beach House.
22 of 31
The meets her match in Bora Bora, coordinating her look by slipping matching shorts over her blue-and-pink monokini and accenting the ensemble with blue sunglasses and headband.
23 of 31
The newest of The Hills cast looks right at home on the beaches of Malibu in a simple black bikini while filming the show.
24 of 31
Before hitting the Teen Choice Awards, the shot her newest music video in a sexy white bikini and movie-star accessories.
25 of 31
PARIS HILTON & DOUG REINHARDT
The on-again couple set sail in Bora Bora in simple black trunks for him and an ornate pink outfit for .
26 of 31
The relaxes in the surf off of Ibiza, Spain, while vacationing with pals.
27 of 31
It’s not the beach, but The City finds time to catch some rays in Central Park in her black-and-white striped bikini and matching shorts.
28 of 31
KATE MOSS & LILY ALLEN
The hits the beach in St. Tropez with her daughter Lila Grace and pal Allen in a striped top and cut-off shorts.
29 of 31
Also in St. Tropez, the ageless supermodel is ship-shape in her chocolate-brown string bikini.
30 of 31
The Hangover star shows off her famous curves in a sweetly polka-dotted red bikini while vacationing in Spain.
31 of 31
The Australian actress makes some waves in her boldly printed string bikini as she plays in the surf in Santa Monica.
Jude Law's Daughter Iris, 15, Models for Teen Vogue
Lupita Nyong'o Gets a Whole New Look for a Perfect 'Summer Sunday'
Johnny Weir Stands Up to Internet Bully Who Attacked His Style
WATCH: Real Housewives of Orange County's Shannon Beador Reveals Her Zany Skin Secrets
Lucy Liu Designed a Shoe and She’s Calling It ‘The Lucy’