Madonna's most outrageous looks

Madonna posted this photo to Instagram baring her arm-pit hair and captioning it "Long hair...... Don't Care!!!!!! #artforfreedom #rebelheart #revolutionoflove," on March 20, 2014.

Madonna at The Metropolitan Museum of Art Costume Institute gala benefit, "Punk: Chaos to Couture," in New York, on May 6, 2013.

Madonna attends the world premiere of "Madonna: The MDNA Tour" in a tuxedo complete with boutonniere at the Paris Theatre in New York, on June 18, 2013.

Madonna performs as cross between an Egyptian Queen and a Roman gladiator during halftime of the NFL Super Bowl XLVI, on Feb, 5, 2012.

Madonna performs dressed as a cheerleader during the "MDNA" tour at Madison Square Garden, on Nov. 12, 2012.

Madonna donning lingerie, mesh, and a top hat, performs with Britney Spears during her Sticky and Sweet Tour at Dodger Stadium in Los Angeles, California, on November 6, 2008.

Madonna looking like a rogue Marie Antoinette in golden lingerie and sequins during a shoot promoting her 're-invention' tour, on March 22, 2004. The red string around her wrist is to ward off evil spirits.

Madonna gets roughed up in the video for her new single 'Die Another Day,' which was released on October 28, 2002.

Madonna celebrates the release of her new CD "Hard Candy" with a performance at Roseland Ballroom in New York, on April 30, 2008. Her all-black outfit is mismatched with knee-high lace-up boots and athletic shorts.

Madonna performs in her signature cone bra lingerie on Feb. 20, 2007.

Madonna performs in over-the-knee boots at the Great Western Forum in Los Angeles, on May 24, 2004.

Mexican-American fashion designer Louis Verdad designed the two-piece cashmere suit Madonna wore during her famous kiss with Britney Spears during the opening performance of the MTV Video Music Awards at New York's Radio City Music Hall, on August 28, 2003.

Madonna performs in outfit covering her in zippers, plaid, and black mesh during her "Drowned" World Tour premiere at the Staples Center in Los Angeles, on Sept. 9, 2001.

Madonna is barely recognizable with red hair and freckles wearing a gold crown and matching nail polish.

Madonna, wearing a Kylie Minogue top fastened with saftey pins and skin-tight cowboy-like pants, performs at the MTV Europe Music Awards, at the Globe Arena, in Stockholm, Sweden, on Nov. 16, 2000.

Madonna is head-to-toe hot pink as she performs "Nothing Really Matters" at the beginning of the 41st Annual Grammy Awards at the Shrine Auditorium in Los Angeles Wednesday, on Feb. 24, 1999.

Madonna rocks a black leather leotard and henna tattoo as she performs for the opening of the San Remo music festival, on Feb. 24, 1998.

"Evita" star Madonna arrives at the film's premiere looking like a poinsettia at the Shrine Auditorium in Los Angeles, on Saturday, Dec. 14, 1996.

Madonna, dressed like the Indian diety Shiva, performs at Madison Square Garden in New York City during the kickoff of her "Girlie Show," on Oct. 14, 1993.

Madonna revealing her leg in a dark velvet dress and wearing a thick yellow cross around her neck on the day before the Dick Tracy premiere, in 1990.

Madonna is seen in her signature cone bra performing during her "Blonde Ambition" tour, on January 1, 1990.