Looks like Rosi "The Surgeon" Sexton to me. Or Dr. Sexton, if she's not punching you in the face.

http://mmajunkie.com/fighters/rosi-sexto...

http://rosisexton.wordpress.com/

http://www.sherdog.com/fighter/Rosi-Sext...

That's my girl Rosi Sexton. They call her the surgeon because she love armbars.

Where are her boobs?

http://cdn2.sbnation.com/imported_assets/637252/armbar-full-mount-800x800.jpg

The one who's applying the arm bar. If that link doesn't work, here's another one

http://www.mmamania.com/2011/2/9/1944963/ultimate-submissions-breaking-down-the-the-arm-bar