Colin Hanks Ties the Knot

Actor Colin Hanks is officially off the market.

The son of actor Tom Hanks and his first wife married publicist Samantha Bryant in Los Angeles on Saturday, his rep confirmed to People magazine.

A source told the magazine that the pair said "I do" at sunset on the roof of the London Hotel in West Hollywood. Actresses Alyssa Milano and Reese Witherspoon were among the 150 guests in attendance, according to the report.

Photos: Celebrity Weddings & Engagements

Hanks and Bryant had been engaged since last June.

Hanks told the New York Times last year that he and Bryant met through mutual friends.

"We had the same group of friends and knew of each other but never paid attention to it," he said.

Bryant told the paper that her husband-to-be was "the perfect gentleman."