Jessica Alba, who is pregnant with her first child, will expand her family by one more.

The "Good Luck Chuck" star is engaged to her boyfriend Cash Warren, the father of her unborn child, reports People.

"I can confirm that they are engaged," says publicist Brad Cafarelli.

Earlier in the month, the couple had confirmed that they are expecting a child in the late spring, early summer.

Alba, 26, and Warren, 28, first met on the set of "Fantastic Four," on which he was a director's assistant. They've been dating on and off since 2004, but apparently reconciled.

Alba currently stars opposite Hayden Christensen for the medical thriller "Awake." Her other films include "Honey," "Sin City," "Good Luck Chuck" and the upcoming "The Eye" and "The Love Guru."