Danny Masterson and Bijou Phillips Welcome Daughter Fianna Francis

The couple welcomed their first child, daughter Fianna Francis Masterson on Valentine’s Day

Danny Masterson and Bijou Phillips Marry

Danny Masterson and his girlfriend of eight years, Bijou Phillips, tied the knot Tuesday before an intimate group of family and friends in the Irish countryside, their rep confirms exclusively to PEOPLE.

In a nod to Masterson’s Irish heritage, the couple had a formal wedding at a private castle, the picturesque setting of Tipperary serving as their backdrop, during a weeklong celebration.

Phillips, 31, wore a custom Zac Posen gown and Masterson, 35, donned Albert Hammond Jr. for Confederacy.

Mackenzie Phillips's Sisters Speak Out About Incest Claim

Her sisters are upset, her stepmother calls her a liar, but Mackenzie Phillips isn’t backing down from revelations that she had a long-term sexual relationship with her father – and hopes she can be the public face of an issue that she says gets little of the attention it deserves.

“If I’ve started a national dialogue that’s going to help people face these issues, then I’m forever grateful,” Phillips, 49, said Friday via satellite during a live broadcast of The Oprah Winfrey Show.

Danny Masterson and Bijou Phillips Are Engaged!

It’s a match made in Hollywood Heaven!

Danny Masterson and Bijou Phillips, who have starred in several films together, are engaged, his rep tells PEOPLE exclusively.

The actor and deejay, 33, proposed to Phillips, 28, on Saturday.

The couple have been dating for 3½ years. They co-starred in the indie film Wake, and recently wrapped two movies together: Made for Each Other and The Bridge to Nowhere directed by Blair Underwood.