happy birthday to you

Selena Gomez is turning 20! The singer, actress, and all-around style setter is no stranger to hitting the red carpet (as far as we're concerned, Justin Bieber is her arm candy). Between her sexy skirts, minidresses, and short-shorts, Selena Gomez has a serious penchant for showing off her gams — and has been racking up leg-baring moments left and right. She manages to show skin without being over-the-top and always looks sophisticated and age-appropriate. In honor of Selena's 20th birthday this Sunday, we're celebrating with a collection of her best mini moments.

Remember when you found out the adorable little girl from Full House was actually two adorable little girls? Well, if you told us 10 years ago that Michelle Tanner times two would grow up to be fashion designers, CFDA Award winners, and sought-after style setters, we'd probably roll our eyes and give you a Michelle-style "Oh, please!"

Mary-Kate and Ashley Olsen have not only grown into superstylish, totally talented women, but they're undeniably gorgeous, too. In editorials, they come across as wistful, wide-eyed beauties with a fierce sense of sisterhood, always exuding polish, gentility, and avant-garde glamour. We're celebrating Mary-Kate and Ashley's 26th birthday with a collection of their chicest editorials to date — and while we love them together, we do realize that they are their own separate entities, so we've made sure to include some solo shots, too. Click through to see them all now.

When we think Jessica Biel, we think street-styled tomboy with major sex appeal. Since her days on 7th Heaven, the actress has grown into her role in the spotlight, taking red carpets in couture — with beau (and rumored fiancé) Justin Timberlake on her arm. In honor of Jess's 30th birthday, we're celebrating with a style tribute; from the actress's early days, heading to film premieres in pedal pushers and denim, to her full-blown, best red-carpet moments. Click through to see 60 of birthday girl's most memorable looks.

In the late '80s and for most of the '90s, Claudia Schiffer was that impossibly beautiful, curvy blonde with an uncanny likeness to Brigitte Bardot, gracing many a Guess ad campaign and magazine covers including Vogue, Elle, and even Playboy. Countless covers, editorials, and ad campaigns later, Claudia Schiffer is still impossibly beautiful, if more lithe than ever. On the red carpet in Cannes this Summer, Claudia dropped our jaws in a sexy lace gown; in a recent editorial for Vogue Deutsch, she looks like a playful, sexy 20-something. We're fascinated by Claudia's evolution, and in honor of her 41st birthday today, we're taking a look back at some of her most memorable photos. Click through to see each one.

We're a day away from Jennifer Aniston's latest flick, Horrible Bosses, in which Aniston plays a less sweet version of her usual onscreen self, alongside an all-star cast including Jason Sudeikis, Jason Bateman, and Colin Farrell. Is it wrong we're just as excited to see what she wears to the premiere? Since her early days on Friends, Jennifer has hit that sweet style spot time and time again. The gorgeous actress is both our favorite funny lady, and seriously hot. It's about time we paid Jen her fashionable dues. Click through for a look at Jen's best red carpet moments, and tell us your favorite in comments!

This day marks the day two fashionistas — Mary-Kate and Ashley Olsen — entered this world 25 years ago. And we're glad they did! We can't imagine life without their distinctive, covetable style. While Mary-Kate stays true to her bohemian-chic style roots — rocking oversize printed dresses, tons of jewelry, and John Lennon-style sunnies — Ashley makes the most of her minimalist polish; nobody can kill a white button-down or Calvin Klein sheath dress like her. They're entrepreneurs, respected designers, and true style stars; and on Monday they turn a mere 25. They've accomplished so much already, it's hard to believe they're only four years beyond the legal drinking age. Let's all wish our favorite twins a happy 25th by checking out their most interesting and innovative outfits through the years.

Natalie Portman isn't afraid of change, whether it's for her complex film roles or her physical appearance. She famously shaved her head for the 2006 movie V For Vendetta, and underwent hours of dance training and hair and makeup to play ballet dancer Nina Sayers in last year's Black Swan. These days, the Academy Award-winning actress is preparing for her next big role as a mom, and in honor of her 30th birthday, we're celebrating with a look back at Natalie's beauty evolution.

Kate Hudson may be known for her lighthearted romantic comedies and bohemian-chic style, but what we love most about her is her bubbly, upbeat, makes-you-wanna-be-her-best-friend personality. Kate is, of course, the daughter of Academy Award-winning actress Goldie Hawn, but quickly made a name for herself as one of the most famous leading ladies in Hollywood. She won a Golden Globe for her role as Penny Lane in 2000's Almost Famous, and since then, has played around with various styles for her trademark blond locks. In honor of her 32nd birthday today, we're taking a look back at Kate Hudson's beauty evolution.

She's one of the sexiest women in Hollywood, with the kind of sultry signature style that calls to mind iconic beauties like Sophia Loren. So, in honor of Eva Mendes's birthday, we've put together a look at her superfemme, smoldering fashion moments. Click through for all the glam looks, as we wish Miss Mendes a very Fab birthday!

She's a reality TV star, fashion designer, and stylish city girl — and we're celebrating Whitney Port's 26th birthday with 50 of her amazingly chic looks. Whether she's gracing the red carpet or just strolling the streets of NYC, Whitney always showcases a cool, eclectic charm that's all her own. Click through to see 50 of Whit's style hits. Happy birthday, Whitney!