Strikeforce bantamweight champion (Rowdy) Ronda Rousey has become the first female fighter to join the UFC.
UFC president Dana White called the former Olympic judo bronze medallist "the whole package."
"This girl is nasty," White told "The Jim Rome Show."
"She might be beautiful on the outside but she's a Diaz brother on the inside." he added, referring to the prickly Nick and Nate Diaz. "She's a real fighter and she's very talented."
Rousey (6-0) has won all of her MMA fights in the first round via ambar. She is coming off an August win over Victoria's Sarah Kaufman.
"Pkay I admit it...I'm officially a @ufc fighter :) SO excited! Can't wait to debut! Let @danawhite know who you want my 1st opponent to be!,: tweeted Rousey.
The California fighter has become something of a media darling of late, profiled in Sports Illustrated and featured on the cover of ESPN The Magazine's body issue.
In the past, White has insisted there isn't enough depth to support women's MMA. But he says he does have a good selection of opponents for Rousey in the 135-pound division.