Matt Damon and his wife, Luciana, have three girls — Alexia, 11, Isabella, 3, and Gia, 20 months — meaning the action star is outnumbered at home. "I call it the 'testosterone deficit,' " Matt has said. "But I'm happy with that. I love my girls — and it's a lot of pink, a lot of princesses and a lot of fun." But he might have an "ally" soon: He and Luciana have just announced that they're expecting a fourth child in the fall!