Met Costume Gala

The Costume Institute Gala, choreographed by Vogue's Anna Wintour and honoring late designer Alexander McQueen, featured stars from Blake Lively to Kate Hudson (and Donald Trump!). See pictures.

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Blake Lively and Karl Lagerfeld

A newly redhead Blake Lively was, as usual, the belle of the ball: The Gossip Girl star, who is also the new face of Chanel, appeared in a design from the house—and on the arm of designer Karl Lagerfeld.

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Jennifer Lopez with Marc Anthony

When it came to high-wattage glamour, there was J.Lo, loyal to Gucci, in a magenta dress with appliqué flowers from their Fall/Winter 2011 collection.

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Madonna

Madonna looked every bit the star in a blue-green Stella McCartney silk dress embroidered with silver stars, reportedly inspired by the Duchess of Windsor. She paired it with vintage Cartier jewels, Sergio Rossi heels, and a beaded Dior clutch.

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Anna Wintour

Vogue editor in chief Anna Wintour, the force behind the annual Costume Institute Gala, wore a colorful beaded dress by Chanel with dark sleeves and a high neck. She arrived with her 24-year-old daughter, Bee Shaffer, who wore a crimson Balenciaga dress with a train.

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Gisele Bündchen and Tom Brady

Gisele Bündchen went big on Monday night, in a voluminous red dress from McQueen's Fall/Winter 2005 runway show, which was titled "The Man Who Knew Too Much."

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Donald and Melania Trump

Donald Trump sure knows how to get around: after being roasted at the White House Correspondents' Dinner in Washington, D.C., on Saturday night, Trump was back in New York on Monday—and was booed by crowds when he and his wife, Melania, appeared on the red carpet at the Met Gala.

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Naomi Campbell

Naomi Campbell, a close friend of McQueen's, has paid tribute to the late designer many times since his death. She attended his funeral service last February with his closest family, honored him onstage during her Fashion Show for Haiti Relief—and mourned her friend at his memorial service at St. Paul's Cathedral in September. And Campbell appeared to be carrying the torch on Monday night, in a white crystal embroidered Alexander McQueen dress.

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Diane Kruger

Diane Kruger looked sultry in a beaded Jason Wu dress with a high slit from the Fall/Winter collection. She walked down the red carpet with the designer.

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Gwyneth Paltrow

Gwyneth Paltrow, who wore her hair in messy curls, sparkled in a nude crystal long-sleeve embroidered gown by Stella McCartney.

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Rihanna

Rihanna wore a black lace one-sleeve embroidered gown by Stella McCartney, which she dramatized with a waist-length braid and bright green Wilfredo Rosado emerald and black gold "Double Cog" earrings.

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Kate Hudson

A pregnant Kate Hudson looked radiant in a gold stretch silk and crystal embroidered strapless gown by Stella McCartney and a small glittering headpiece.

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Demi Moore

Demi Moore certainly channeled Alexander McQueen, even though she didn't wear his designs. The actress appeared in a dramatic black dress with ostrich feathers and Swarovski crystals designed by fashion darling Prabal Gurung, which she paired with a fascinator hat by Philip Treacy.

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Miranda Kerr and Orlando Bloom

Model Miranda Kerr, with her husband, Orlando Bloom, looked straight out of Black Swan in a tulle Marchesa dress and Nicholas Kirkwood heels.

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Penelope Cruz with Oscar de la Renta

Penelope Cruz, in a black Oscar de la Renta gown and Chopard jewels, walked the red carpet with the designer.

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Sarah Jessica Parker

Sarah Jessica Parker, who famously attended the gala in 2006 in tartan plaid with Alexander McQueen by her side, honored the late designer with a simpler dress, also a McQueen, which was embroidered with crystal beads.

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Renee Zellweger

Renee Zellweger looked sleek and simple in a nude beaded dress by Carolina Herrera.

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Daphne Guinness

Daphne Guinness, a close friend and muse to Alexander McQueen, honored his spirit in a massive feathered corset dress from the line's Fall/Winter 2011 collection. "He was not just a designer, he was an artist," Guinness wrote of McQueen for The Daily Beast last year. "He was just so incredibly chic."

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Zoe Saldana

This was strong evidence for summer's neon trend: Zoe Saldana's bright green dress by Calvin Klein lit up the red carpet.

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Sarah Burton

The woman of the hour was Sarah Burton, the creative director at Alexander McQueen, who became a British national hero last week for designing Kate Middleton's wedding dress. As Burton said after the wedding: "It has been the experience of a lifetime to work with Catherine Middleton to create her wedding dress, and I have enjoyed every moment of it. It was such an incredible honour to be asked, and I am so proud of what we and the Alexander McQueen team have created…Alexander McQueen's designs are all about bringing contrasts together to create startling and beautiful clothes and I hope that by marrying traditional fabrics and lacework, with a modern structure and design we have created a beautiful dress for Catherine on her wedding day."

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Liv Tyler

Liv Tyler, who was accompanied by Givenchy designer Riccardo Tisci, wore a long tulle dress from the Spring Couture 2011 runway.

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Florence Welch

Last year it was Lady Gaga. This year, the entertainment for the evening was Florence and the Machine. And it made sense, as the band's front woman, Florence Welch, has become fashion royalty in the past year. She was the first to wear a dress from Givenchy's Spring 2011 couture collection earlier this year at the Grammy Awards—but at the Met Ball, she channeled old Hollywood glamour in a white dress by Yves Saint Laurent.

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Anna dello Russo

Lady Gaga may have arrived at the Grammys in an egg—but Anna dello Russo's egg head at the Met Gala proved much more fashionable. Vogue Nippon's eccentric editor drew attention on the red carpet with her headpiece and brocade Alexander McQueen suit.

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Jay-Z and Beyonce

Beyonce Knowles wore a figure-hugging black-and-gold embroidered dress by Emilio Pucci and Lorraine Schwartz black diamond earrings, while her husband, Jay-Z, opted for a white dinner jacket.

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Iman

Iman glittered brighter than any other star in a bronze-and-gold embroidered long-sleeved Stella McCartney jumpsuit and a Kotur clutch.

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Mick Jagger and L'Wren Scott

Mick Jagger walked the red carpet with his longtime girlfriend, designer L'Wren Scott, who wore a midnight blue silk tulle dress of her own design, which was embroidered with golden clouds.

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Michelle Williams

Michelle Williams looked playful in a black long-sleeved dress by Miu Miu embroidered with gold swallows.

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Taylor Swift

The 21-year-old country star looked older than her years in an embroidered J. Mendel one-shouldered dress. Fittingly, her date for the evening was the (much older) designer, Gilles Mendel. But that didn't stop Swift's rabid teenage audience from following her every move. When she encountered Twilight star Ashley Greene (who dated her ex-boyfriend, heartthrob Joe Jones), the two exchanged a warm hug. But as one fan tweeted: "Swift and Ashley Greene hugged at the MET Gala. WOAH! They both dated Joe. This is huge."

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Ginnifer Goodwin

In a sea of couture gowns, perhaps the most refreshing look came from Ginnifer Goodwin, who stood out in an emerald green dress from the affordable British fashion chain TopShop. But with Van Cleef & Arpels' "Art Deco Zip" necklace and Aperlai sandals, the dress could certainly have passed for Gucci.

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Fergie and Josh Duhamel

Black Eyed Peas star Fergie, who kissed her husband, Josh Duhamel, on the red carpet, wore a platinum embroidered dress by Marchesa with a flared tulle skirt.