Alyssa Milano at 40: David Bugliari celebrate the surprise birthday party

LA: Alyssa Milano's husband David Bugliari turned back the hands of time to celebrate the Charmed actress' 40th birthday!

CAA agent Bugliari threw his wife a surprise party at The London in West Hollywood Dec. 14, multiple sources tell Us Weekly exclusively.

"It's prom-themed because Alyssa didn't have a prom and hers would have been in 1990s," one insider reveals of the former child star. "Everybody dressed up and everyone got a corsage when they walked in."

Several of Milano's famous friends - including Ludacris, Ken Jeong and Brian Grazer - joined in on the fun. As DJ Vicious-Lee played Milano's favorite hits, guests were able to take prom-style portraits in a photo booth.

"Everyone had a great time!" a source tells Us of the star-studded soiree. "Alyssa was really surprised. She had no clue!"