Thanks to a little thing called Twilight, Kristen Stewart has become a household name, not to mention a style icon. We love seeing her stroll the city in jeans and Converse, then getting dolled up for a swanky party or premiere. Since today marks Miss Stewart's 22nd birthday, we're celebrating in a major way. We've already taken a look back at her red-carpet style — now we're wishing Kristen a Read more

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 Read more

Lauren Conrad may have been best known for her starring roles on Laguna Beach and The Hills, but she has proven herself to be quite the businesswoman as well. She has blossomed into a designer, author, fashion and beauty guru, and a true sartorial star — and to celebrate her 26th birthday today, we've put together a collection of Lauren's most stylish looks. Click through now to see them all. Read more

Today is January Jones's 34th birthday, and to celebrate, we're taking a look at her most alluring magazine editorials. She may play an ice queen on TV, but there's no question about it: the Mad Men star is as hot as they come. From gracing the covers of W and GQ to serving as the face of Versace, the actress and new mom (son Xander was born in September) is on fire — and doesn't show any signs Read more

Katie Holmes is turning 33 today, and even though most of us may best remember her from her days on Dawson's Creek, the wife, mother, and bona fide style star has since solidified her place in the fashion industry — Katie has appeared on scores of fashion magazine covers, glossy editorials, and major ad campaigns, and serves as the current face of Ann Taylor. Whether she plays it sweet or Read more

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 Read more

There are few with the style savvy and fashion chops to pull off a look the way Diane Kruger can. Bringing fashionable risk to red carpet fruition, she's not only adept at crafting the perfect ensemble, she quite literally stuns in them, too. With supermodel genetics, a serious acting talent, and a gift for styling, she's a triple threat — at the very least. She sets a pretty high bar — she Read more

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. Read more

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; Read more

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 Read more