MMA fighter Ronda Rousey

LAS VEGAS, NV - AUGUST 11: Ronda Rousey poses for a portrait on August 11, 2011 in Las Vegas, Nevada. (Photo by Kari Hubert/Zuffa LLC/Forza LLC via Getty Images)

LAS VEGAS - NOVEMBER 17: Ronda Rousey on the scale at the Strikeforce Challengers weigh-in at Palms Hotel and Casino on November 17, 2011 in Las Vegas, Nevada. (Photo by Kari Hubert/Forza LLC/Forza LLC via Getty Images)

LAS VEGAS - NOVEMBER 18: Ronda Rousey warms up before her fight with Julia Budd backstage at the Pearl at the Palms on November 18, 2011 in Las Vegas, Nevada. (Photo by Todd Lussier/Forza LLC/Forza LLC via Getty Images)

ANAHEIM, CA - NOVEMBER 12: MMA Fighter Ronda Rousey arrives at the UFC on FOX: live Heavyweight Championship at Honda Center on November 12, 2011 in Anaheim, California. (Photo by Paul Archuleta/FilmMagic)

LAS VEGAS - AUGUST 12: Ronda Rousey celebrates after her victory over Sarah D'Alelio at the Pearl at the Palms on August 12, 2011 in Las Vegas, Nevada. (Photo by Kari Hubert/Forza LLC/Forza LLC via Getty Images)

Ronda Rousey , right, from the United States battles with Annett Boehm of Germany during he women's judo -70kg middleweight division finals at the Beijing 2008 Olympics in Beijing, Wednesday, Aug. 13, 2008. USA won the bronze. (AP Photo/Charles Dharapak)

Bronze medalist Ronda Rousey of the United States, celebrates during the medals ceremony for the women's -70kg judo middleweight division finals at the Beijing 2008 Olympics in Beijing, Wednesday, Aug. 13, 2008. (AP Photo/Charles Dharapak)

Ronda Rousey of U.S. (white) battles with Brazil's Mayra Silva to win the gold medal of the Women's 70kg judo competition of the Pan American games of Rio de Janeiro, July 20, 2007. REUTERS/Bruno Domingos (BRAZIL)

U.S. Ronda Rousey, right, shows her gold medal as Brazil's Mayra Silva stands with her on the winner's podium for the Judo Women's -70 kg middle competition at the Pan American Games in Rio de Janeiro, Friday, July 20, 2007. (AP Photo/Silvia Izquierdo)