Hollywood's Hottest Moms

"If you guys don't know, I'm pregnant," Alba joked to the star-studded audience at a Glamour-hosted luncheon in honor of V-Day. "I hope [my dress] won't pop while I'm up here. And if it does, you're all women, and I think you'll understand it. [When you're pregnant], your breasts are engorged and your stomach is getting bigger..." Alba made the most of her new body in a pink print dress from Dior by John Galliano.