It's the battle of the Brits: Sienna Miller and Cara Delevingne both hit the Costume Institute Gala red carpet wearing similar studded looks from Burberry. Sienna decided to contrast her fluid crepe white gown with a black studded leather biker jacket and a matching spiked headband, while Cara opted for a black studded plunge-neck column gown, complete with an equally tough white leather clutch. Both beauties channeled punk-cool to perfection, but which Met Gala look do you prefer?

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Julianne Hough opted for a more whimsical choice this evening, stepping out in a strapless gray Topshop tulle dress. The high-low hemline revealed a pair of black rhinestone-studded pumps, offering up a shimmery touch to her neutral color palette. Meanwhile, a slick updo, bold eyebrows, and dramatic lashes finished off her red-carpet outfit. How'd she do?

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Jessica Alba's Met Gala getup was equal parts feminine and punk, thanks to her custom Tory Burch fishtail gown, which also happened to feature a floral laser-cut detail and midriff-baring cutouts. To temper her more ladylike look, Alba opted for a black spiked Christian Louboutin clutch and diamond cuff earrings. Do tell: was her red carpet look a smashing success?

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Rosie Huntington-Whiteley opted for a much darker look this evening, wearing a Gucci gown featuring a sheer black-and-gold tulle top and satin skirt. To add to the high shine, the model accessorized with a lizard jeweled clutch, beautiful drop earrings, and a diamond gold statement ring. Are you loving her skin-revealing brand of glam?

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Iron Man 3 star Gwyneth Paltrow opted out of the punk theme, but we're far from disappointed. The blond beauty shone bright in a vibrant pink Valentino gown, which came complete with a modern sheer inset. To polish off her simple yet stunning look, Gwyneth accessorized with Wilfredo Rosado diamond earrings and wore a high ponytail and nude lips. Are you feeling her pretty in (hot) pink ensemble?

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Jennifer Lawrence took the ladylike route and donned a black strapless tea-length dress by Dior — an apropos pick for the current face of Miss Dior. She paired the look with a netted Jennifer Behr veil and spiked Brian Atwood platform sandals. Zoom in, and you'll see intricate beading and mini leather floral embellishments all over Lawrence's dress, which she cinched in with a skinny black leather belt. Bright red lips and diamond stud earrings finished off her red carpet outfit. What's your verdict?

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We didn't expect anything less than punk perfection from Sarah Jessica Parker. Needless to say, the actress killed it tonight in an ensemble composed of a black and gold printed Giles Deacon gown, tartan thigh-high boots by Christian Louboutin, and an outstanding Philip Treacy mohawk headpiece that only she could pull off. The look channeled a major punk-meets-glam vibe, which she furthered with decadent Fred Leighton jewelry. Do tell — are you loving her look?

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Miranda Kerr took the sexy route at the Met Gala and showed off her supermodel figure in a custom Michael Kors black crepe gown. The revealing number featured sultry cutouts and a paillette bandeau. As for Kerr's punk twist? A metallic spiked Christian Louboutin clutch and a shimmery set of nail bracelets did the trick. Do you love Miranda's look, or were you hoping for something different from the gorgeous Aussie?

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Scandal star Kerry Washington looked decadent and moody in a custom metallic floral-print mermaid by Vera Wang at the Met Gala. For an added luxe touch, the actress accessorized with black hand-stitched opera-length lambskin gloves. And where punk rock was concerned, Washington even added a few dark purple highlights to her sleek, straight hair. What are your thoughts on her edgy-meets-glamorous getup — love it or leave it?

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Nicole Richie might have opted for a more subdued ensemble tonight, wearing a beaded Topshop dress and Vero Cuoio pumps, but she made up for it with a super punked-out gray updo and subversive jewels. Gold cuff earrings injected a tough touch into her look, while additional vintage silver jewels by Maria Francesca Pepe and a gold House of Harlow 1960 clutch supplied a more ladylike vibe. Do you love it?

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Hailee Steinfeld hit the Met Gala red carpet wearing a one-of-a-kind dress by Donna Karan Atelier. Look closely and you'll see that the bone-hued tea-length dress is actually made out of leather, and adorned with oxidized antique gold safety pins and studs. To further her punk flair, the Romeo and Juliet actress completed her look with Eddie Borgo jewels, a shimmery gold Jimmy Choo clutch, and matching sparkly shoes. Green eye shadow and a tough 'do finish off her look — are you feeling it?

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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?