This week we're handing over our huge, heartfelt congratulations to mom-to-be Christina Applegate. On Wednesday, she announced the news that she and fiance Martyn Lenoble are expecting their first child. By Thursday, she was already thanking fans for their support and Twittering about her cravings. "What I wouldn't give for a bag of Have'a chips and my homemade guacamole right now...but that's a gross breakfast," she posted. If anyone deserves a happy ending, it's the Samantha Who? actress -- who divorced actor Jonathan Schaech in 2007 and was diagnosed with breast cancer a year later. But after undergoing a double mastectomy, Applegate is now cancer-free and starting a new family. Here's wishing her a beautiful pregnancy!