Losing hair presents men with a challenge -- try for the comb-over, keep the fringe, or take it all off. Here are celebrities without most of the hair on their heads -- the bold, the brave, the bald.
Stanley Tucci arrives at the premiere of Screen Gems' "Burlesque" at Grauman's Chinese Theater in Los Angeles. (Nov. 15, 2010)
An undated photo shows Cynthia Nixon who shaved her head for her upcoming role in Broadway play 'Wit.'
Phil Collins waves at the end of his performance at the Italian State RAI TV program "Che Tempo Fa" in Milan, Italy. (Oct. 17, 2010)
Samuel L. Jackson arrives to the world premiere of "Soul Men" at the Apollo Theater in Manhattan. (Oct. 28, 2008)
Andre Agassi wrote in his book "Open" that he was more worried about his wig falling off during the 1990 French Open than the actual match. (Jan. 20, 2011)
Michael Chiklis plays Vick Mackey on "The Shield." He told NPR he shaved his head for a role when he was 20 years old. Chiklis attributes his hair loss to not removing greasepaint properly for the role. (Feb. 14, 2011)
Alan Arkin attends the 79th annual Academy Award nominees lunchon held at the Beverly Hills Hotel in California. (Feb. 5, 2007)
Ben Kingsley attends the party for "The Wackness" hosted by The Cinema Society and Sony Cierge at The Gramercy Hotel in Manhattan. (June 25, 2008)
Patrick Stewart arrives at the United Kingdom premiere of "Sleuth" at the Odeon West End in London. (Nov. 18, 2007)
Vin Diesel arrives at the premiere of Universal's "Fast and Furious" held at Universal CityWalk Theaters in Universal City, Calif. (March 12, 2009)
Actor Ed Asner arrives at the Kennedy Center for the Performing Arts for the 14th Annual Mark Twain Prize awards ceremony in Washington. (Oct. 23, 2011)