David Arquette and Carmen Electra kick it with Perez Hilton at his CD release party at Bootsy Bellows; Caroline D'Amore, Diana Madison, and L.A. media mavens step out for the Rev New Media open house; Courtney Stodden, Shekhar Rahate, and Buzz Aldrin hit up Dr. Ava Cadell's Sizzling Sexy Summer Event; Jennifer Morrison, Vanessa Hudgens, and Audrina Patridge get their hair styled at the Nine Zero One Salon; Julia Louis-Dreyfus, Amy Smart, Ed Begley Jr., and other environmentalist notables support Heal the Bay's Bring Back the Beach Annual Gala; Kerry Washington, Katie Lowes and "Scandal" co-stars walk the red carpet for the season finale celebration—get your final L.A. event rundown of the week in this edition of Last Night's Parties.