Happy Birthday

It's Sarah Jessica Parker's birthday on Sunday, so in honor of one of the most fashionable women in showbiz, we've rounded up her five best dressed-down chic looks. The woman can work a red carpet gown like no other, but it's her casual NYC looks that really show off her creativity, and meanwhile rock our worlds. Step inside to see which five laid-back SJP looks we love and how to re-create them for your very own city-slicking activities.

Eva Mendes turned 38 today, so in honor of the gorgeous actress, let's draw inspiration from her easy, glamorous style. Whether she's posing on the red carpet or strutting the sidewalks around the globe, Eva always manages to incorporate ladylike glam into her wardrobe with such ease. Take a peek in her closet and you'll likely find retro-inspired frocks, statement bags, fur stoles, cateye sunglasses, and sexy heels. Step inside to get a peek at our favorite Eva Mendes outfits and to re-create them in your everyday life.

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.

She's best known on the big screen as part of the Cullen clan in Twilight, but off camera Ashley Greene's caught our attention with killer stems and a selection of super-hot red-carpet wear. Today the actress — and new face of DKNY — turns 25, and we're celebrating with a stylish tribute to what Miss Greene does best. In body-hugging Givenchy, leg-baring Michael Kors, or ultra-flirty Giambattista Valli, Ashley's zeroed in on the perfect designs to complement an enviable bod and a penchant for sexy event style. Just click through to get a glimpse of her 25 hottest looks yet.

The always-stylish and wildly talented Elizabeth Olsen turns 23 today! Let's wish her a happy birthday by paying homage to her most outstanding ensembles. She has many, but there are five in particular that we are hardcore crushing on. And though some of them are many months old, her style is timeless enough to be mimicked now and all year. Click through to see how to re-create the birthday girl's five uniquely stunning looks.

Let's all clear our throats and sing Lauren Conrad a fabulous happy birthday tune. The darling reality-star-turned-designer celebrates 26 today, and in honor of her big day, we're re-creating five of her most amazing looks. Some of these outfits aren't weather-appropriate at the moment, but with a few tweaks and additions, they can go with the season. Step inside to see five of our favorite Lauren Conrad ensembles and how to re-create them for your life.

As the first black model to grace the covers of GQ and Sports Illustrated's Swimsuit Issue, Tyra Banks solidified her legacy early on. With countless runways, print campaigns (remember that sexy milk mustache for Got Milk?), commercials, and a turn as one of Victoria's Secret's ultra-sexy angels under her belt, there's no arguing the fact that Tyra's supermodel status is well deserved. Now, we know her best as Top Model-turned-talk show host and author — and of course, the woman who taught us all how to "smize" like a pro. In honor of the utterly fierce Miss Banks's birthday, we're celebrating with her stylish evolution. Click through for 50 of her most memorable fashion moments, and join us in wishing Tyra a very happy birthday.

Katy Perry is one of our favorites to watch. Since bursting on the scene — and on all of our playlists — with "I Kissed a Girl," we knew Katy Perry wasn't just about the music. The pop star is a performer in every sense of the word. Her girlie-girl-meets-sex-kitten style has captivated us from red carpet award shows to premieres, parties, and even her playful street style. She marries her pop vocals with cool, retro-inspired pinup costumes to take the stage, then outfits something more glamorous and entirely unexpected for red carpet appearances — for starters, you may remember her light-up gown at the Met Gala last year? Since today is the lovely Katy's 27th birthday, we're celebrating with a look at some of her most memorable style moments. Click through for the ultra-outrageous looks we love and join us in wishing Russell Brand's better half a very happy birthday.