The UFC has their first ever women's champion in Ronda Rousey. The former Olympian will headline UFC 157 in Anaheim on Feb. 23 in her Octagon debut.

UFC president Dana White announced on Thursday that Rousey will face former Strikeforce and Invicta contender Liz Carmouche in the main event of the upcoming card in 2013.

“In the UFC, Feb. 23 at the Honda Center in Anaheim, Calif. (Ronda Rousey) will be fighting Liz Carmouche, and she is the main event,” said White.

Rousey signed with the UFC a few weeks ago, making her the first ever female fighter under contract with the promotion. Now she not only makes her UFC debut, but she headlines a pay-per-view card for her first fight in the Octagon.

“I think the women are here to stay and I want to prove it,” said Rousey.

Undefeated in her career, Rousey has been unstoppable thus far and looks to keep her streak alive when she debuts in the UFC in early 2013.

Facing Rousey will be the only lady who stepped up to the challenge, according to White, and that is former Strikeforce and Invicta contender Liz Carmouche.

“That's who wanted to fight her. Believe me, people aren't kicking the door down at Zuffa wanting to fight (Rousey),” White said about Carmouche.

A winner of two fights in a row, Carmouche will look to be the first person in MMA to hand Rousey a loss, while also taking over the UFC women's bantamweight title.

UFC 157 goes down on Feb 23 from Anaheim, Calif., and airs live on pay-per-view.

(photos courtesy of Showtime)