Mario Lopez & Courtney Mazza Show Off Their Baby Bump

Mario Lopez and girlfriend, Courtney Mazza, were on hand for Cosmopolitan Magazine’s third annual Bikini Bash at the Planet Hollywood Resort & Casino in Las Vegas yesterday. It’s so cute seeing Mario in dad mode!  I’m sure he’ll be one of those dads we see pushing around the stroller everywhere.

Mario Lopez and his girlfriend Courtney Laine Mazza are expecting a baby

Mario Lopez and his girlfriend Courtney Laine Mazza are expecting a baby this fall, and the former Saved by the Bell star and America's Best Dance Crew host went on Ellen today to talk all about his impending daddy status, and he says he doesn't want to know if he's getting a boy or a girl until the big day.

Mario Lopez and Courtney Laine Mazza (Getty)
Even though he says getting surprised with the baby's sex is "one of life's biggest surprises," his fans aren't too thrilled with having to play the waiting game. "The baby is due in the fall and people are very upset that I'm not finding out what the sex is going to be," he said on the show.

In addition to becoming a dad, Mario just got a dog, which he named -- ready for this -- Julio Cesar Chavez Lopez. It's an adorable French bulldog, and the puppy goes by Don Julio for shirt, thankfully! "He is the best little dog," Mario gushed. Just wait until he has a baby!

Ellen gave him a hilarious Baby Bjorn as a parting gift, and it was complete with sprayed-on abs, so everyone can still see his rock-hard abs while he's carrying his new kid!