Congrats to the happy couple! More than four years after they started dating, Christina Applegate and fiance Martyn LeNoble tied the knot in a private ceremony, her rep confirms to Us Weekly.The Anchorman 2 actress, 41, and her musician beau, 43, got engaged after two years of dating on Valentine’s Day in 2010. They have a 2-year-old daughter together, Sadie Grace, born Jan. 27, 2011The Emmy-nominated star -- who recently quit NBC’s Up All Night -- has credited her new husband, a founding member of ‘90s rock band Porno for Pyros, with helping to get her through her battle with breast cancer. (Applegate was diagnosed with the disease in 2008 and underwent a double mastectomy that same year.)This is the second marriage for both. Applegate was previously married to Johnathon Schaech for six years.Us Weekly