Actress Hayley Hasselhoff, the daughter of actor David Hasselhoff and Pamela Bach, has joined the NOH8 Campaign against Proposition 8, California's gay marriage ban.

The 18-year-old Hasselhoff appeared with her father and sister, Taylor Ann, earlier this year in cabler A&E's short-lived reality series The Hasselhoffs. She currently plays self-deprecating Amber in the ABC Family original series Huge.

The NOH8 Campaign, which is helmed by photographer-activist Adam Bouska and his partner Jeff Parshley, raises funds and awareness to defeat Proposition 8.

Celebrities and everyday folks are photographed with their mouths duct taped and the campaign's familiar “NOH8” slogan often written on one cheek.

Hayley Hasselhoff posed topless for her photo with her hands cupped over her breasts.

Other famous faces involved in the NOH8 Campaign include: Tommy Joe Ratliff, rocker Adam Lambert's bass guitarist, Isiah Thomas, men's basketball coach of the Florida International University Golden Panthers, and his son, Joshua Zeke Thomas, actress Tori Spelling and Cindy McCain, wife of Arizona Senator John McCain, and their daughter Meghan, a pro-gay Republican.