So how big has UFC champion Ronda Rousey gotten? How about announcing your next fight exclusively on ABC's Good Morning America.

Rousey said she will fight Holly Holm on January 2nd in Las Vegas.

Holm is being called the most decorated striker in Mixed Martial Arts. She is 28 and was named Ring Magazine #1 fighter in 2013.

Rousey says she'll have no problem with her though...