Shannon Tweed

Shannon Tweed was the 1982 "Playmate of the Year." She has been with partner Gene Simmons of Kiss since 1985 and is known for her acting in erotic thrillers. (credit: Alberto E. Rodriguez/Getty Images)

Anna Nicole Smith

Smith was known for her fuller figure and constant tabloid presence. The model, actress, and television personality died in 2007 by drug overdose. (credit: AP)

Bettie Page

Page is famous for her fetish modeling and pin-up photos. Her jet black hair and bangs have become iconic. (credit: AP)

Crystal Harris

The 25-year-old was engaged to Hugh Hefner. She broke up the engagement five days before the wedding. (credit: Alberto E. Rodriguez/Getty Images)

Jayne Mansfield

Mansfield was considered a sex symbol in the 50s and 60s. She was known as the bustier version of Marilyn Monroe. (credit: AP)

Jenny McCarthy

McCarthy is known for her sense of humor. The model dated actor Jim Carrey for five years. (credit: AP)

Kelly Monaco

Monaco was nominated for two daytime Emmys as Samantha McCall on "General Hospital." (credit: David Becker/Getty Images)

Kimberley Conrad

Conrad is known for being the first playmate to marry Playboy founder Hugh Hefner. (credit: Peter Kramer/Getty Images)

Marilyn Monroe

Marilyn Monroe was the first Playmate even though Hugh Hefner had never met her. The pictures were taken from her 1949 nude calendar shoot. Hefner bought the crypt next to Monroe in 1992 for $75,000. (credit: AP)

Pamela Anderson

The Baywatch star has appeared on the cover of Playboy more than anyone else. (credit: AP)

Shanna Moakler

A former Miss USA, Shanna Moakler began modeling at age 15. She is known for her on and off relationship with Blink-182's Travis Barker.(credit: AP Photo/Jeff Christensen)

Lindsay Lohan

(credit: Valerie Macon/Getty Images)