Katherine Heigl attended the 3rd Annual Hot In Hollywood at the Avalon on Saturday in Hollywood, California August 17. Casting her blonde hair to one side and exposing parts of both of her balls by wearing a very low-cut dress, the Grey’s Anatomy actress Katherine Heigl looked really hot!
About Hot In Hollywood (via JustJared), it is a celebration benefiting charities dedicated to the education, prevention, testing and treatment of HIV/AIDS. Proceeds from Hot In Hollywood benefit AHF’s (AIDS Healthcare Foundation) HIV Mobile Prevention and Testing Unit, a customized recreational vehicle that travels throughout Los Angeles County to reach underserved populations with HIV/AIDS education, testing, counseling, and treatment referral services.
Among others who lent their support to the event were including 
America Ferrera, Vern Troyer, Ana Ortiz, Emily Deschanel & TR Knight etc. (Images credit: PR Photos)
