Former teen star Melissa Joan Hart gives birth to her first child, Mason Walter Wilkerson!

Melissa Joan Hart, best known as the star of TV's Sabrina the Teenage Witch, and her musician husband, Mark Wilkerson, welcomed their first child, a baby boy, on Wednesday, PEOPLE has learned exclusively.

Mason Walter Wilkerson was born at 4:19 p.m. in Los Angeles, and weighed in at 9 lbs. exactly.

"He was a little stubborn, but all is well," the actress tells PEOPLE. "Everyone is well and we are all relieved.". . . . . .Full Story