Christina Applegate made headlines when she underwent a double mastectomy to help rid herself of breast cancer. Today she has even more reason to be thankful because she is expecting a baby with fiance Martyn Lenoble. The couple have been together for two years and were engaged this past Valentine’s Day. Applegate credits Lenoble for being a rock during her battle with cancer and giving her a reason to live. This will be the first child for the couple.