People for the Ethical Treatment of Animals (PETA) is celebrating its 30th anniversary Saturday, September 25, with a star-studded gala. The PETA 30th Anniversary Gala and Humanitarian Awards will honor animal-rights supporting stars that have partaken in PETA campaigns, fighting for animal rights and spreading awareness of animal-related issues. Stars attending the event include Anjelica Huston, Bob Barker, Woody Harrelson, Dave Navarro, Lea Michele, and Chrissy Hynde. The gala is hosted by Alec Baldwin and will be held at the Hollywood Palladium. The event will stream live on the PETA website, where, in honor of the anniversary, PETA is asking people to donate $30 to the organization.