Style Breakdown

Gwyneth Paltrow caused a brouhaha at the 'Iron Man 3' premiere, going commando in a really ugly dress that was trying to be fashion-forward. (She even acknowledged that it was a mistake.) PEOPLE's selection for the Most Beautiful Woman in the World is often a red carpet "do," and she does have signatures that often work for her -- but they are certainly not failproof.

While Reese Witherspoon's squeaky clean public image recently took a hit when she and hubby Jim Toth were arrested while intoxicated, it's likely that the incident will be a mere blip on her persona's radar and quickly forgotten. One thing people usually can't forget? Her normally spot-on red carpet style. The Oscar-winning actress has always stunned at Hollywood events -- with a few clunkers spr

Mariah Carey's voice is unmistakable -- and so is her signature style. The high-octave diva has gone up and down with her weight over the years, but she doesn't always adjust her sizes or clothing choices to fall in line with her changing shape. However, when Mimi is on, she's on.

Halle Berry is pregnant again, and the fact that she's already dressing her new baby bump in appropriate fashion has inspired us to dissect her recent style.

Adam Lambert isn't shy when it comes to his closet and dressing up -- no pun intended. The openly gay (and newly single) singer is flashy, flamboyant and fabulous -- and he isn't afraid to don outrageous clothes on stage and off. He didn't earn the nickname "Glambert" by accident.

Like her late mother-in-law Princess Diana, Kate Middleton is one of the most photographed style stars of her day whose every stitch of clothing is watched with hawk-like interest. If she wears a mass market dress, it immediately sells out in minutes. If it's something high-end and luxe, copycats and replicas are instantly created and trickle down to discount retailers. While she may be the futur

Katy Perry (and her twins) get a lot of attention for how they dress. She's known for her candy-coated, confectionary costumes, but we're narrowing our focus to Perry's red carpet and casual attire since it's more indicative of her personal style. While it's true that some elements of her stage wear creep into her ensembles, in her off-hours she's much more subdued and far less cartoonish. Read M

Mila Kunis is a natural stunner. She is the great brunette beauty of the current generation, much like the classic Audrey Hepburn was to hers. And even though she's drop-dead gorgeous, there's an accessibility to her, as though she just might say "yes" if you ask her out. (Remember, she did spend a decade in a relationship with Macaulay Culkin.) When it comes to style and fashion, Ashton

Rihanna is a style lightning rod. On one hand, she plays by her own rules, creating and breaking fashion prescriptions with little regard to how everyone else does things, and sometimes she wows us. Other times, though, she completely misses the mark. We noticed that happens usually when she wears pants. Now, we're not suggesting she go pantsless anymore -- she does that enough on social media. B

When we first met country queen Carrie Underwood on the fourth season of 'American Idol,' she had crunchy gelled hair as she used her big voice to ultimately score the winning title. The Oklahoma native has since developed into a legit superstar -- and a head-turning fashionista. Underwood's style is usually an often-difficult-to-achieve mix of sexy and elegant, and she tends to choose designers

Selena Gomez is just 20 years old, but she's already established herself as a fashionista. We won't go as far as to award her icon status just yet, but she's getting there. That said, she's had her share of stumbles along the way.

Anne Hathaway has emerged as a fashion plate only in the past two years or so. While she looked gorgeous when she (awkwardly) co-hosted the Oscars in 2011, blowing through seven dresses, she's only truly exploded and evolved as a fashion risk-taker and edgy dresser in the past year. She has become "one to watch" on red carpets.

Before you come unhinged, Twihards, let it be known that we think the erstwhile Bella Swan, actress Kristen Stewart, is gorgeous. Even when she's pouting, frowning or standing uncomfortably on the red carpet, she makes it work. She's kind of turned it into her "thing," and while it hasn't quite reached the art form of, say, Victoria Beckham, give her time. She'll get there.

Kate Hudson often shows off her hippie chic and boho chic style on the street. She is pretty much one of the first celebs to rock Uggs -- so we can thank her for that awful trend -- and things like oversized, Fair Isle sweaters. But it's her red carpet style that is oh-so-enviable. She makes smart, edgy choices with some of her gowns. Every now and then, though, we wonder WTF went through her pre

Jennifer Lawrence has evolved into a style icon and a twice-nominated Oscar contender in the span of a few years. Her style is sexy and edgy, and she has only rare "WTF?" moments (and even rarer wardrobe malfunctions). The woman who is perhaps best known as Katniss Everdeen from 'The Hunger Games' usually shows up at a Hollywood event and knocks 'em dead. But that's not to say her style

Newly-single lady Britney Spears has had more style misses than hits, and now that she's in her 30s and has two kids, she can no longer chalk up mistakes like micro-minis and too-tight tops on being the pop tart she once was. She was at the height of her Lolita powers years ago, but that phase has faded into the rear view. It's time to dress more appropriately -- and keep the sexy.

Emma Stone is Hollywood's favorite redhead, even though she's a natural blonde and has been sporting that shade lately. She picked up the baton dropped by Lindsay Lohan, taking over as the movie industry's flame-haired sexpot, scooping up both La Lohan's roles -- and her former status as a fashion plate.

Beyonce is a style icon. There's no arguing that. She even has her own fashion line, House of Dereon. She dresses smartly to play up her curves, whether she's at a major Hollywood event or just taking in a concert and hanging out. At any time and at any place, she's one hot mama. But there were a few outfits, many in her long-ago past while she was still cultivating her 'Bootylicious' style, that

Kate Winslet is a true English rose. With her peaches and cream complexion, her loose wavy hair and curvy figure, she's a natural beauty. The newlywed is a sure bet to turn heads, and is someone style watchers look forward to seeing on red carpets. But that said, she's had a handful of questionable fashion moments, too.

Kanye West is one of the most stylish dudes around. He has his own high-end, eponymous fashion line -- and unlike the clothing companies created by so many of his peers, it's not stuff you can nab at the mall. 'Ye has fashion shows in Paris, and he takes the endeavor seriously. So it's no surprise that he usually hits the mark, whether he's rolling in kicks, jeans and leather, or on a red carpet