Is Sofia Vergara's 21-year-old son about to get a sibling? According to the New York Post, Vergara and her fiance, Nick Loeb, are in the process of trying to have their first child together via surrogate. "The child will be biologically Sofia and Nick's baby, and she has selected a surrogate — who is a very close girlfriend — to carry the baby," an insider tells the paper. "A procedure has taken place, and Sofia and Nick will find out in a few weeks if it was successful, if the surrogate is pregnant, and if they will become parents." Word is that Vergara has wanted to become a mom again for some time, but the 40-year-old "Modern Family" star has been extremely busy between shooting her hit show, promoting her clothing line and negotiating a number of possible movie deals. Vergara and Loeb, 37, got engaged in Mexico last summer.