Check out photos from the night's hottest bashes
Although Jeremy Renner spent much of the night celebrating The Hurt Locker's Best Picture win with director Kathryn Bigelow at the Vanity Fair party, he brought his mom as his date! "My mom loves me!" he told Us. "I'm not a ladies' man -- I'm a working man!"
Credit: Jeff Vespa/VF1/WireImage.com