Star Sighting: JLo Turns 40!

It's her party – and she'll go glam if she wants to! Escorted by husband Marc Anthony, Jennifer Lopez arrives for her 40th birthday party at Manhattan's Edison Ballroom, which was decorated with white orchids, on Saturday. "Jennifer was the belle of the ball. She was glowing and just radiating happiness," a source told People. "She really had a great time."