The 10 most outrageous Oscars looks ever

Singer Celine Dion tried out a twist on menswear—a 180-degree twist, that is. She showed her major flair for the dramatic in a backwards tuxedo from John Galliano for Christian Dior, accented with a Dior by Stephen Jones topper and Ray-Bans studded with diamonds by Martin Katz. "Ray-Ban said if I wore these they would give $50,000 to my cystic fibrosis charity, so you better believe I wore them," said the singer.

Taking a break from bold statement gowns, Hilary Swank chose a ballerina-inspired tulle Christian Dior dress. John Galliano was responsible for the custom design and Tod's dyed an evening bag to match.

Halle Berry knows how to do classy and sexy. The night she won an Oscar for Monster's Ball, the actress highlighted her amazing figure with a peek-a-boo embroidered gown from up-and-coming designer Elie Saab. "Halle knows her body, and the rest of the world appreciates it," said her stylist Philip Bloch. "She understands what looks best on her, though she's always looking for new designers."

Nominated for Thelma and Louise, Geena Davis embodied frothy early-'90s style in a gams-baring ruffled minidress courtesy of costume designers Ruth Meyers and Bill Hargate.

When you're going to sing "Somewhere Over the Rainbow" at the Oscars, who can blame you for choosing a sorbet-hued gown? Singer Faith Hill gave a nod to the legendary Wizard of Oz tune with her pastel Versace design. "Since she was wearing black onstage, we wanted to do something colorful for the carpet," her stylist Garth Condit told People.

Uma Thurman wore a couture Christian Lacroix ensemble—and got called Swiss Miss. "It was a beautiful dress," Thurman told InStyle. "Turns out I wore it wrong."

This funny lady stole the spotlight when she presented at the 65th Annual Academy Awards. Bought at a Beverly Hills boutique, Whoopi Goldberg's purple satin frock coat opened to reveal a green lining and slim brocade trousers.

When Cher was informed of an official awards show dress-code, the presenter decided to make a statement. Her long-time collaborator (since the days of Sonny and Cher!) Bob Mackie designed a showgirl-worthy beaded black outfit with a cashmere cape, sparkling loincloth and a towering 2-foot headpiece made of over 800 rooster feathers. Making her dazzling appearance onstage, she cracked: "As you can see, I did receive my Academy booklet on how to dress like a serious actress."

Oscar dress as performance art? The boundary-pushing Bjork channeled a swan in a Marjan Pejoski ensemble, even going so far as to drop golden eggs (designed by artist boyfriend Matthew Barney) along the red carpet. Reporters in attendance weren't sure what to make of the statement. "They didn't get it," she told the Guardian newspaper. "They actually thought that I was trying to look like Jennifer Aniston but got it wrong."

Diana Ross chose a custom satin Bob Mackie and Ray Aghayan design for her Lady Sings the Blues nod. "Diana had a little boy's body," Mackie told the Los Angeles Times of their choice to go menswear. "She was bone thin and looked wonderful in pants."