Halle Berry was stunning in an embroidered Elie Saab gown in 2002 when she won an Oscar for her role in "Monster's Ball," becoming the first African-American woman to win best actress.
Halle Berry, 2002 —
Halle Berry was stunning in an embroidered Elie Saab gown in 2002 when she won an Oscar for her role in "Monster's Ball," becoming the first African-American woman to win best actress.
TIMOTHY A. CLARY/AFP/Getty Images
In 2006, Michelle Williams was nominated for best actress in a supporting role for her performance in "Brokeback Mountain." She walked the red carpet wearing a yellow Vera Wang gown with her then-boyfriend, the late Heath Ledger.
Michelle Williams, 2006 —
In 2006, Michelle Williams was nominated for best actress in a supporting role for her performance in "Brokeback Mountain." She walked the red carpet wearing a yellow Vera Wang gown with her then-boyfriend, the late Heath Ledger.
Frazer Harrison/Getty Images
Cher channeled her inner showgirl at the 1986 Academy Awards, showing up in this sequined and feathered ensemble.
Cher, 1986 —
Cher channeled her inner showgirl at the 1986 Academy Awards, showing up in this sequined and feathered ensemble.
Hulton Archive/Getty Images
Hilary Swank turned heads in a backless dress by Guy Laroche in 2005, the year she won the Oscar for her role in "Million Dollar Baby."
Hilary Swank, 2005 —
Hilary Swank turned heads in a backless dress by Guy Laroche in 2005, the year she won the Oscar for her role in "Million Dollar Baby."
Gerard BURKHART/AFP/Getty Images
Jennifer Lawrence was praised for donning a simple Calvin Klein gown on the red carpet at the 2011 Academy Awards. The actress was nominated for her role in "Winter's Bone," but lost the statue to Natalie Portman.
Jennifer Lawrence, 2011 —
Jennifer Lawrence was praised for donning a simple Calvin Klein gown on the red carpet at the 2011 Academy Awards. The actress was nominated for her role in "Winter's Bone," but lost the statue to Natalie Portman.
John Shearer/Getty Images
In 2001, Julia Roberts accepted her Oscar for "Erin Brockovich" wearing a black and white vintage Valentino gown.
Julia Roberts, 2001 —
In 2001, Julia Roberts accepted her Oscar for "Erin Brockovich" wearing a black and white vintage Valentino gown.
Kevin Winter/Getty Images
Jennifer Hudson showed off her impressive weight loss at the 2011 Academy Awards wearing a tangerine-colored Atelier Versace gown.
Jennifer Hudson, 2011 —
Jennifer Hudson showed off her impressive weight loss at the 2011 Academy Awards wearing a tangerine-colored Atelier Versace gown.
Ethan Miller/Getty Images
Celine Dion took a fashion risk in 1999 when she wore a white suit and hat, with the Jacket backwards.
Celine Dion, 1999 —
Celine Dion took a fashion risk in 1999 when she wore a white suit and hat, with the Jacket backwards.
Vince Bucci/AFP/Getty Images
Sandra Bullock won best actress for her role in "The Blind Side" in 2010, as well as a spot on several best-dressed lists, thanks to her beaded Marchesa gown.
Sandra Bullock, 2010 —
Sandra Bullock won best actress for her role in "The Blind Side" in 2010, as well as a spot on several best-dressed lists, thanks to her beaded Marchesa gown.
Alberto E. Rodriguez/Getty Images
The Balenciaga gown (complete with a giant red bow) that Oscar winner Nicole Kidman donned on the red carpet in 2007 might have inspired <a href="index.php?page=&url=http%3A%2F%2Fwww.dailymail.co.uk%2Ffemail%2Farticle-2107182%2FOscars-2012-Emma-Stones-Giambattista-Valli-gown-just-like-Nicole-Kidmans-2007.html" target="_blank" target="_blank">Emma Stone's 2012 Oscar look.</a>
Nicole Kidman, 2007 —
The Balenciaga gown (complete with a giant red bow) that Oscar winner Nicole Kidman donned on the red carpet in 2007 might have inspired Emma Stone's 2012 Oscar look.
Frazer Harrison/Getty Images
Diane Keaton is known for rocking menswear inspired looks, so no one was surprised to see the actress walk the red carpet wearing a Ralph Lauren suit in 2004. However, the ensemble did earn Keaton a spot on quite a few worst dressed lists.
Diane Keaton, 2004 —
Diane Keaton is known for rocking menswear inspired looks, so no one was surprised to see the actress walk the red carpet wearing a Ralph Lauren suit in 2004. However, the ensemble did earn Keaton a spot on quite a few worst dressed lists.
Vince Bucci/Getty Images
Octavia Spencer wowed in a Tadashi Shoji gown at the 2012 Academy Awards, where she won an Oscar for her role in "The Help."
Octavia Spencer, 2012 —
Octavia Spencer wowed in a Tadashi Shoji gown at the 2012 Academy Awards, where she won an Oscar for her role in "The Help."
FREDERIC J. BROWN/AFP/Getty Images
Courtney Love didn't have a strand of hair out of place when she attended the Oscars in 1997 wearing a white satin Versace gown. Of course, grunge won out in the end. "The People vs. Larry Flynt" actress's more polished style was short lived.
Courtney Love, 1997 —
Courtney Love didn't have a strand of hair out of place when she attended the Oscars in 1997 wearing a white satin Versace gown. Of course, grunge won out in the end. "The People vs. Larry Flynt" actress's more polished style was short lived.
HECTOR MATA/AFP/Getty Images
In 2011, the year Amy Adams was nominated for her role in "The Fighter," she paired her navy blue L'Wren Scott gown with emerald and diamond jewels.
Amy Adams, 2011 —
In 2011, the year Amy Adams was nominated for her role in "The Fighter," she paired her navy blue L'Wren Scott gown with emerald and diamond jewels.
Kevork Djansezian/Getty Images
The Ralph Lauren gown Gwyneth Paltrow wore to the Oscars in 1999 is credited with making the color pink fashionable again. The dress received mixed reviews from critics, but it's still one of the most recognizable looks ever on the red carpet.
Gwyneth Paltrow, 1999 —
The Ralph Lauren gown Gwyneth Paltrow wore to the Oscars in 1999 is credited with making the color pink fashionable again. The dress received mixed reviews from critics, but it's still one of the most recognizable looks ever on the red carpet.
Vince Bucci/AFP/Getty Images
Paltrow donned another memorable look in 2002. The darker Alexander McQueen separates she wore on the red carpet were a far cry from the pink prom dress she sported in 2000.
Gwyneth Paltrow, 2002 —
Paltrow donned another memorable look in 2002. The darker Alexander McQueen separates she wore on the red carpet were a far cry from the pink prom dress she sported in 2000.
Frank Micelotta/ImageDirect
Natalie Portman draped her baby bump in a purple Rodarte gown for the 2011 Academy Awards. The actress, who had been nominated once before, won her first Oscar that year for her role in "Black Swan."
Natalie Portman, 2011 —
Natalie Portman draped her baby bump in a purple Rodarte gown for the 2011 Academy Awards. The actress, who had been nominated once before, won her first Oscar that year for her role in "Black Swan."
John Shearer/Getty Images
Charlize Theron looked glamorous in the sparkly Gucci gown she wore in 2004, the year she won an Oscar for her performance in "Monster."
Charlize Theron, 2004 —
Charlize Theron looked glamorous in the sparkly Gucci gown she wore in 2004, the year she won an Oscar for her performance in "Monster."
Carlo Allegri/Getty Images
Angelina Jolie channeled Morticia Addams in this black number at the 2000 Academy Awards.
Angelina Jolie, 2000 —
Angelina Jolie channeled Morticia Addams in this black number at the 2000 Academy Awards.
LUCY NICHOLSON/AFP/Getty Images
Cate Blanchett's 2011 Oscar dress received mixed reviews, but the pastel Givenchy Couture gown was certainly a look to remember.
Cate Blanchett, 2011 —
Cate Blanchett's 2011 Oscar dress received mixed reviews, but the pastel Givenchy Couture gown was certainly a look to remember.
Frazer Harrison/Getty Images
Reese Witherspoon wore another iconic black-and-white gown in 2011. She paired the Giorgio Armani Prive dress with Neil Lane jewels and a glamorous ponytail.
Reese Witherspoon, 2011 —
Reese Witherspoon wore another iconic black-and-white gown in 2011. She paired the Giorgio Armani Prive dress with Neil Lane jewels and a glamorous ponytail.
Ethan Miller/Getty Images
Jennifer Garner wore a memorable tangerine gown at the 2004 Academy Awards. "Jennifer is so comfortable in her own skin, she can wear a gown this complex," designer Valentino said.
Jennifer Garner, 2004 —
Jennifer Garner wore a memorable tangerine gown at the 2004 Academy Awards. "Jennifer is so comfortable in her own skin, she can wear a gown this complex," designer Valentino said.
Carlo Allegri/Getty Images
The plum Vera Wang gown that Keira Knightley wore in 2006 landed the actress on many best-dressed lists.
Keira Knightley, 2006 —
The plum Vera Wang gown that Keira Knightley wore in 2006 landed the actress on many best-dressed lists.
Frazer Harrison/Getty Images
"South Park" creators Trey Parker, left, and Matt Stone showed up at the 2000 awards show dressed as Jennifer Lopez at the 42nd Grammy Award and Gwyneth Paltrow at the 1999 Oscars. The men eventually <a href="index.php?page=&url=http%3A%2F%2Fwww.washingtonpost.com%2Fblogs%2Fcelebritology%2Fpost%2Fmatt-stone-and-trey-parker-were-on-drugs-when-they-wore-dresses-to-the-oscars-video%2F2011%2F09%2F30%2FgIQA2h4iAL_blog.html" target="_blank" target="_blank">told Jimmy Kimmel</a> that they were on acid while walking the red carpet.
Trey Parker and Matt Stone, 2000 —
"South Park" creators Trey Parker, left, and Matt Stone showed up at the 2000 awards show dressed as Jennifer Lopez at the 42nd Grammy Award and Gwyneth Paltrow at the 1999 Oscars. The men eventually told Jimmy Kimmel that they were on acid while walking the red carpet.
Scott Nelson/AFP/Getty Images
The red vintage Valentino gown that Anne Hathaway wore on the red carpet at the 2011 Academy Awards proved to be a fan favorite. The actress donned <a href="index.php?page=&url=http%3A%2F%2Fmarquee.blogs.cnn.com%2F2011%2F02%2F28%2Fwhich-anne-hathaway-oscars-look-is-your-fave%2F" target="_blank">at least seven different looks</a> that night to host the show with James Franco.
Anne Hathaway, 2011 —
The red vintage Valentino gown that Anne Hathaway wore on the red carpet at the 2011 Academy Awards proved to be a fan favorite. The actress donned at least seven different looks that night to host the show with James Franco.
John Shearer/Getty Images
The infamous swan dress that Bjork wore in 2001 has been ingrained in pop culture as the absolute worst dress anyone could ever wear on the red carpet. Memorable is an understatement.
Bjork, 2001 —
The infamous swan dress that Bjork wore in 2001 has been ingrained in pop culture as the absolute worst dress anyone could ever wear on the red carpet. Memorable is an understatement.
LUCY NICHOLSON/AFP/Getty Images