Style Breakdown

Christina Hendricks, with her fiery red hair, porcelain skin and curvy figure, is a unique, unconventional beauty. The 'Mad Men' star dresses to play up her hourglass shape and often chooses attire in slimming, figure flattering black. She loves L'Wren Scott's designs, too!

Sienna Miller is often credited being one of the key fashionistas that ushered in boho chic as a style. The actress, who also fronts her own Twenty8Twelve fashion line, is a new mom, yet she still retains that signature, artfully messy style that has made her a fashion darling for the past decade.

Chloe Grace Moretz is just 16, but she is emerging as quite a style star. The actress wears all the hottest designers and is already demonstrating an affinity for heels! There's nowhere to go but up for this pretty and talented little lady!

Alyssa Milano is 40 and the mom to a young toddler -- son Milo -- but she still emits a youthful, effervescent glow. She's naturally pretty and in possession of a dynamite smile, and her style remains enviable.

Ashley Greene doesn't get as much attention as her 'Twilight' co-star Kristen Stewart, but Greene is talented, adorable and stylish. While her red carpet gowns are not as daring as her fellow Twilighter, they are stunning.

Liv Tyler has a model's height and a gorgeous face, so she's already got the deck stacked in her favor. But she's also curvy, so she inspires women of all shapes and sizes with her enviable, wearable and easy-to-emulate style. She's mom to son Milo, 9, yet she always appears pulled together and fashionable. But like all stars, she has her off moments from time to time.

Victoria Beckham is known for three things -- her sense of style, her sky high heels and her permascowl. She wears and designs amazing attire, is never seen in flats and never, ever cracks a smile. Celebs love her clothes. We love her clothes. She has an innate and inherent sense of what looks good on the female body.

Zooey Deschanel is the queen of quirk when it comes to fashion and style. She is known for her signature bangs, rendered unrecognizable without 'em. She favors flirty, girly dresses and isn't afraid to be frilly when the red carpet occasion calls for it.

Christina Aguilera emerged from a bit of a hiatus from 'The Voice' -- she sat out Season 4 -- looking her very best while promoting the upcoming fifth season in a blush micro mini by Alaia. She shed some excess baggage, ditched the ubiquitous crimson lips and wowed us. It inspired us to take a look back at her recent style.

Gorgeous, Oscar-winning actress Penelope Cruz is simply stunning. But while she isn't afraid to be frilly and fancy on the red carpet, she also has a enviable casual personal style. She's been out of the spotlight lately because she's been pregnant (she and hubby Javier Bardem recently welcomed their second child), but in the last few years, she's wowed us with some of her outfits.

Katie Holmes became a style icon by virtue of the media coverage bestowed upon her when she hooked up with, procreated with and married Tom Cruise. All eyes were on the cute 'Dawson's Creek' actress, so she had to step it up and go from girl to woman in a heartbeat. She and Cruise are now divorced, but that hasn't stopped her style from evolving.

Singer and newlywed Avril Lavigne is 28, twice-married, beautiful and famous. She also has some of the most gorgeous hair there is. But she still dresses like a teenager -- her personal style and her closet (loaded with black, sneakers and leather) skews incredibly young. Sometimes it works. And sometimes ... well, not so much.

Demi Lovato is only 20, but she's already developed a signature style -- and it's both rocker chic and rocker chick. While the singer changes her hair cut, color and length on the regular, she is incredibly consistent with her attire, and her closet is loaded with tons of black leggings, black leather, studs, glossy patent leather stilettos and minis that show off her shapely legs.

Eva Longoria is one of the most beautiful and stylish women in Hollywood. Unlike so many of her peers, the former Desperate Housewife doesn't have a style signature or a look she revisits on red carpets (and no, "form-fitting" and "figure-hugging" fabrics don't count). In that respect, she's sort of a renegade, doing something different and keeping us guessing at every turn. Re

Kate Upton is her generation's crown princess, the blonde hottie who is the yardstick by which all other blonde hotties are measured. The 21-year-old model is a bombshell and a favorite of dudes, yet because she's so personable, women like her too. She's got a terrific body and (obviously) photographs well. When it comes to her style, she favors strapless, form-fitting, knee-length silhouettes and

We recognize the irony in doing a Style Breakdown on troubled actress Amanda Bynes -- especially since it appears to everyone (but her) that she's having the most epic of public "I can't deal with fame" mental breakdowns. However, Bynes' look has changed pretty drastically, so we felt compelled to point out what's right -- there actually are some things she does well -- and what's wrong

Jennifer Lopez is a glamazon. She's rarely seen dressed super casually or sans heels -- with J. Lo, life is a red carpet. But even when she does dial it down, she is decidedly high-end. Hers is a closet to envy.

Justin Bieber is a stylish dude. Sure, he dons some questionable ensembs -- but who doesn't at 19? His style is evolving and he has the luxury of being young, which means he's allowed to make fashion mistakes. But for the most part, he often presents himself as a teen wearing jeans and kicks, accessorized with a healthy amount of bling. He pretty much lives in sneakers, even at formal red carpet

Angelina Jolie was the talk of last week after she boldly announced that thanks to a faulty gene that gave her an almost certain chance of being stricken with breast cancer, she'd voluntarily had a double-mastectomy to decrease her chances of developing the disease. Jolie, one of the most gorgeous woman on the planet, has wowed us for years with her antics -- be they outrageous (her blood oath via

Actress Carey Mulligan had already begun to establish herself as a style star before her role as Daisy in 'The Great Gatsby.' But given the attention she's now getting due to the film and her marriage to Marcus Mumford (frontman of the band Mumford & Sons), her every fashion move is being scrutinized -- and will be for a long time moving forward. She takes risks, that's for sure.