Fashion's biggest ball of the year, The Metropolitan Museum's Costume Institute Gala, brought out the stars in all their sartorial glory last night. This year's theme was 'Alexander McQueen: Savage Beauty," a subject that inspired passion, in part because the unparalleled designer was so beloved by his peers and industry friends, but also because of his untimely and tragic death last year.

Many guests paid tribute to the late designer by wearing his creations, while a few donned the label's more recent styles by McQueen's protege and successor, Sarah Burton, now known worldwide as the Royal Wedding dress designer.

Flame-haired model Karen Elson wore a McQueen runway original, one she first modeled a decade ago: "I haven't worn it since. It's been in the archives. It's maybe the last time it could possibly be worn...it's falling apart. It's really a special dress," she told our sister site, Huffington Post Style. Others who suited up in McQueen for his big fashion tribute were heiress and friend of the designer, Daphne Guinness; Sarah Jessica Parker; Naomi Campbell; Vogue editor-at-large Hamish Bowles and Giselle Bundchen, among others.

After watching the parade of requisite wacky wedding hats last Friday, seeing similarly outrageous toppers at the Met Ball wasn't as much of a surprise as it might have been. Amongst those who donned festive head gear for the occasion were actress Demi Moore, tennis wild child Serena Williams and Vogue Japan's Anna Dello Russo (in a particularly bold egg-shaped design).

Check out the other mini-trends at the Ball, in our gallery of stars in their finest, above.

Also see how Beyonce's beyond-tight dress got her booed on the red carpet.