You don't have to feel guilty about watching Alyson Hannigan pawing Emily Deschanel's boobs — it's for a good cause. The actresses joined Jaime King, Minka Kelly and Katharine McPhee in a video slumber party featured on FunnyorDie.com to promote regular breast cancer screenings for the organization Stand Up 2 Cancer.

Check out the video "The Booby Scare" for yourself: