A tuxedoed Marlene Dietrich in the 1930 film Morocco.
Wallis Simpson in a Schiaparelli Summer 1937 Collection Dinner Suit.
Katharine Hepburn, the notorious champion of menswear for women.
In 1966 Yves Saint Laurent created the Le Smoking tuxedo.
Bianca Jagger wore a YSL Le Smoking jacket in her wedding to Mick Jagger.
Diane Keaton's memorable wardrobe in Annie Hall, still imitated to this day.
Patti Smith: poet, artist and grandmother of punk rock.
Meanwhile, Fran Lebowitz was wearing suits like a uniform.
Melanie Griffith and Sigourney Weaver conquered Wall Street in power suits in the 1988 film Working Girl.
'90s grunge brought plaid, riot grrrl and androgyny. Sleater Kinney had all three.
In 1993 a Minnesota Senator was the first woman to wear a pant suit in the Senate floor, paving the way for female politicians everywhere.
Agyness Deyn burst on the scene equipped with a boyish haircut and her boyfriend's closet.
Powerhouse singer Janelle Monae in her trademark tuxedo.
Lady Gaga took menswear for women to the extreme with her alter-ego, Jo Calderone.
YSL's 2012 Menswear campaign featuring Saskia de Brauw.
In light of YSL picking a woman to front their menswear line and Ford Models signing a woman to their men’s division, we’ve taken a trip through gender-bending history to celebrate the women who wore the pants.