Drew Barrymore has married boyfriend Will Kopelman.

A rep for the actress has confirmed to Us Weekly that Barrymore, 37, and Kopelman, 34, were wed Saturday evening.

The couple, currently expecting their first child together, enjoyed a private ceremony at the actress' Montecito, Calif., estate, with families and close friends in attendance.

Guests included Cameron Diaz, the pregnant Reese Witherspoon and her husband Jim Toth, Busy Phillips and Jimmy Fallon and his wife Nancy Juvonen, according to the Us Weekly report.

This is Barrymore's third marriage. The Barrymore dynasty scion and onetime child star married Welsh bar owner Jeremy Thomas in March 1994 but split from him only a month later. Her second marriage was to comic Tom Green in July 2001. Green filed for divorce that December.

The Big Miracle star and Kopelman have been official since last year, with Kopelman proposing to Barrymore in December.

Barrymore told Ellen DeGeneres on her TV show that she's in love with Kopelman's entire family.

He has this incredible family, Barrymore said during the Feb. 1 show. I am as in love with his family as I am with him. Which is an extraordinary sort of gift. You never take that for granted. ... It really is an absolute blessing. I feel very lucky. They're incredible people.

Barrymore has yet to confirm her pregnancy, but has been proudly showing her growing baby bump.

According to Us, Barrymore decided on a June wedding because she wanted to get married before the baby comes, but doesn't want to be huge.

Drew has found a family that she wants to be a part of. For so long, she had the fun, friends and career success, but always wanted to be part of a close family, like Will's, an insider told the magazine.

Click Start to check out photos of Drew Barrymore and Will Kopelman.