Most Fab

When Donatella Versace throws a party, a star-studded crowd will attend. Case in point: the designer heralded a new era of Versus Versace and debuted JW Anderson's first capsule collection for the brand last night, and to celebrate, Jaime King, Hayden Panettiere, and Heidi Klum dressed up for the occasion. While both Panettiere and Klum selected dresses from Versace's Spring '13 collection, King took the head-to-toe Versus route. And in doing so, the Hart of Dixie star showed off a much more edged-up, safety-pin-included look. Three different plays on evening glamour (with an apropos Versace rocker-girl twist) and only one can be named "best dressed." Vote for your favorite below!

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The Versus Versace Party Draws an A-List Crowd — Who's Best Dressed?

Jaime King looks so cool in that safety-pin skirt.

Hayden Panettiere is a vision in flirty Versace!

Heidi Klum's supersexy LBD is my favorite.

Star Trek's latest chapter isn't just for Trekkies. Zoe Saldana and Alice Eve's promo tour has already been proof of the glamour on Star Trek Into Darkness's red carpets. But last night's premiere got quadruple the celebrity-style treatment when Kate Beckinsale and Jennifer Morrison joined the film's leading ladies in LA. Jennifer channeled Disco-era dazzle in a sequined jumpsuit, then polished it off with nude platform pumps and a pair of major jewel-drop earrings. Kate took a more subtle approach in a riff on the classic LBD, a strapless and asymmetrical-hemmed dress from Alberta Ferretti, which she amped up with a playful pair of neon sandals. As for the night's costars, Zoe Saldana bared her midriff in a ruffled, nude peekaboo confection from Rodarte's Fall '13 collection and Alice Eve slipped into a sleek gold and black sheath from Zuhair Murad. That's the rundown on who wore what; now it's time to cast your vote.

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Who Wowed at Star Trek's LA Premiere?

Jennifer's jumpsuit is so glam.

Kate's LBD is chic — and those shoes are amazing!

I love Zoe's totally unique look.

Alice Eve is stunning in black and gold.

We're calling it a four-way styling tie when it comes to last night's Veuve Clicquot-hosted Tate Americas Foundation Artists Dinner in NYC. Anne Hathaway — bleach-blond pixie cut still intact — went with a leg-baring soft pink Givenchy mini and gold Jimmy Choo sandals; Ciara stunned in a nude long-sleeved gown; Sarah Jessica Parker wore a vintage floral number and loaded up on a very cool mix of jewels (Fred Leighton earrings, a Repossi turquoise ring, and a Fendi cuff and rings); and Alexa Chung opted for a dark two-toned strapless cocktail dress with ankle-strap pumps. Were you more wowed by the dramatic floor-skimming options or drawn to the leggier looks? Weigh in below!

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The Art World Has Never Looked Chicer — Who's Best Dressed?

Anne Hathaway

Ciara

Sarah Jessica Parker

Alexa Chung

The 2013 Met Gala best-dressed set could easily be likened to the fashion Olympics, and this year's Punk: Chaos to Couture exhibition turnout made it harder than ever to pick only five gold-medal contenders. Beyoncé Knowles spared no head-turning detail in a custom Givenchy Haute Couture flame-embroidered gown; Gwyneth Paltrow stood out in a covered-up hot pink Valentino number; Rooney Mara played the edgy card in a custom Givenchy Haute Couture gown, complete with floral embroidery, zippers, ruffles, and a split-front opening; Jennifer Lawrence chose ladylike Dior (and that Jennifer Behr netted veil!); and Katie Holmes stunned in a downright ethereal custom Calvin Klein creation. It's a close one, but it's time for you to declare a best-dressed winner of the night.

Vote on all of our Met Gala polls here!

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Met Gala: Best Dressed

Beyoncé Knowles

Gwyneth Paltrow

Rooney Mara

Jennifer Lawrence

Katie Holmes

No look at The Kentucky Derby is complete without a hat. That was evident from this weekend's festive celebrity looks from Lauren Conrad, Krysten Ritter, and Coco Rocha, who finished their ladylike ensembles with coordinating headwear. Coco Rocha made an entrance in sophisticated skirt suiting — but it was the dramatic orchid-adorned headpiece that really turned heads. Krysten Ritter dressed up her floral-print dress and Bionda Castana heels with a floppy ribbon-trimmed hat, and Lauren Conrad paired a soft nude polka-dot sheath dress with a nude floral-adorned fascinator. That's the rundown on who wore what — now, take in the hat-topped looks below and cast your vote for the Derby's best dressed.

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Which Celebrity Aced the Derby Dress Code?

I love Coco's ladylike look — and that hat is gorgeous!

Krysten's ensemble is perfect for Spring.

Lauren — the subtle palette is lovely.

Balmain is known for its rocker-girl appeal, and at last night's dinner hosted by the label's designer, Olivier Rousteing, Rosie Huntington-Whiteley and Nicole Richie caught our attention (and then some) wearing the brand's subversive pieces. Rosie channeled the '90s in a black and white look comprised of a printed leather check skirt, long-sleeved leather crop top, and sexy laser-cut boots. Meanwhile, Nicole took a slightly softer approach in an intricate summery knit minidress and soft gray suede pumps. Both look hot in their warm-weather party ensembles, but which one gets your best-dressed vote — Rosie or Nicole?

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Who's Best Dressed in Balmain?

Rosie — I love her '90s bad-girl look!

Nicole — her intricate knit dress is ideal for Summer.

If you've ever wondered what to wear when celebrating with one of fashion's most iconic brands, this style-conscious crew from Ferragamo's NYC party last night could lend you a few very chic outfit ideas. Jessica Hart has a look for the more fashion-forward downtown girl; the Australian model arrived in a printed miniskirt and pastel-hued jacket, but gave the outfit a seriously sexy twist with a pair of lace-up over-the-knee boots. Eva Longoria provided a more understated — but impeccably chic — cocktail look in a sculptural little white dress and gold-studded heels. Meanwhile, Lily Aldridge put her model stems on display in a quilted short-sleeved LBD and cutout pointed-toe heels, and Nicky Hilton styled up a party-ready play on Spring's big black and white trend, complete with a pair of studded Valentino heels. That's the breakdown on what this leggy set wore to party with Ferragamo — now it's time to weigh in. Which look gets your vote?

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Who's Best Dressed at Ferragamo's Spring Fete?

Jessica — those boots are amazing.

Eva's LWD is superchic.

I love Lily's look — polished and sexy.

Nicky's black and white is so on trend.

You can count on two things at Chanel's annual Tribeca Film Festival Artists Dinner: style setters of the A-list variety and lots of Chanel. Those were the common denominators at last night's festivities, where the dinner party was a real-life runway for Karl Lagerfeld's recent collections. Who better to showcase the designer's wares than guests (and real-life models) Joan Smalls, Alexa Chung, and Dree Hemingway. Joan's supermodel stems were on display in a gray tweed jumpsuit from the label's Pre-Spring '13 collection. Alexa exuded her signature charm in a creamy Chanel minidress from the Spring '13 line and cap-toe Mary Janes, then finished it all off with a bright red lip. Dree opted for a more colorful confection, choosing a pastel minidress from the Resort '13 line, and styled it up with a white button-down underneath and a pair of black and white brogues for a tomboy twist. This fashion-conscious set gave us Chanel three ways — now it's up to you to decide who did it best. Who gets your vote?

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Joan, Dree, and Alexa Are Chanel-Perfect at the Label's TFF Dinner

Joan has never looked better!

Dree — I love her playful styling.

Alexa — so ladylike and chic.

Last night's BAFTA NY celebration for Mad Men was the perfect excuse for the series's leading ladies to show off their offscreen style. January Jones, Jessica Paré, and Christina Hendricks proved that they're just as chic when they're not in costume — though some of their cocktail attire borrowed from their characters' retro-inspired glamour. In a formfitting emerald-green L'Wren Scott sheath with gold-beaded trim, Jessica channeled Megan Draper's '60s-era chic. Meanwhile, January was a far cry from her Betty Francis persona in a moto-style leather jacket by Versace, a printed miniskirt, and classic black pumps. As for Christina, the actress opted for a classic-feeling LBD (a staple in any fashion era), complete with a sheer inset at the neckline and finished with a pair of understated heels. That's the rundown on who wore what, now it's time to cast your vote: which Mad Men star was last night's best dressed?

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Which Mad Men Star Gets Your Vote?

January — Her look was easy and cool.

I love Jessica's nod to retro glamour.

Christina — That LBD was perfect on her!