"Extra's" Mario Lopez and girlfriend Courtney Mazza welcomed their first child, Gia Francesa on September 11 this year -- and Alicia Keys and hubby Swizz Beatz welcomed a son, Egypt Dean, in October.

Check out what other celebs added to their family's in 2010.

Babies Born in 2010

Mario Lopez and Courtney Mazza

"Extra's" Mario Lopez and girlfriend Courtney Mazza welcomed a healthy baby girl, Gia Francesca Lopez, weighing in at 6 lbs, 4 oz, on Saturday, Sept. 11 in Burbank, CA.

Kelly Preston and John Travolta

Kelly Preston and John Travolta welcomed their third child, son Benjamin, weighing 8 lbs,, 3 oz. in November at a hospital in Florida.

Matt Damon and Wife

Actor Matt Damon and his wife Luciana welcomed a baby girl, Stella Zavala Damon, in Ocotber in New York.

Celine Dion and Rene Angelil

Singer Celine Dion gave birth to fraternal twin boys in October at St. Mary's Medical Center in West Palm Beach, Fla.

Alicia Keys and Swizz Beatz

Singer Alicia Keys and hubby Swizz Beatz welcomed a son, Egypt Dean, in October.

Robin Thicke and Paula Patton

The happy couple welcomed their first child, Julian Fuego, in April in Los Angeles.

Will Arnett and Amy Poehler

Emmy-nominated actress Amy Poehler and her husband Will Arnett welcomed their second child, a baby boy, Abel James Arnett, in August.

Kevin Costner and Wife

Actor Kevin Costner and his wife, Christine Baumgarter, welcomed their third child, a baby girl named Grace Avery Costner, in June.

Amy Adams

Amy Adams and fiance Darren Le Gallo, welcomed a baby girl, Aviana Olea Le Gallo in May.

Claudia Schiffer

Supermodel Claudia Schiffer and her husband, British film producer and director Matthew Vaughn, welcomed a baby girl in June.

Mark McGrath

Singer and former "Extra" host Mark McGrath and fiancee Carin Kingsland welcomed twins in April.

Amanda Peet

Actress Amanda Peet delivered a healthy baby girl in April. It's her second child with screenwriter husband David Benioff.

Rebecca Gayheart and Eric Dane

Rebecca Gayheart and her McSteamy hubby Eric Dane welcomed a baby girl in March.

Keysia Cole

Keyshia Cole became a new mother in March, when she gave birth to a baby boy, her first with Cleveland Cavaliers hubby Daniel Gibson.

Christina Milian and The Dream

The singer gave birth to her first child in February, a girl. The father is Grammy-winning music producer The-Dream, aka Terius Hagert Youngdell Nash.

Matthew McConaughey and Camila Alves

McConaughey and girlfriend Camila Alves welcomed their first daughter, Vida Alves McConaughey in January. The actor and Alves are already parents to son Levi.