Melissa Joan Hart & Husband Welcome Baby No. 2

Originally posted Wednesday March 12, 2008 07:30 PM EDT

Melissa Joan Hart and husband Mark Wilkerson welcomed their second child, a son, on Wednesday, their rep tells PEOPLE.

Braydon Hart Wilkerson was born at 3 p.m. in Los Angeles after 10 hours of labor, weighing 7 lbs., 3 oz., rep Brad Taylor says.

The oldest of eight children, Hart, 31, says she's happy to bring home a sibling for her 2-year-old son Mason.

"This has been a long but exciting pregnancy, and we along with Mason are excited to add to the Wilkerson clan," she says.

Wilkerson adds: "Melissa and I are the proudest parents ever and this is the best thing that has happened to us this year!"

The couple married in 2003 in Florence, Italy. She recently did a guest spot on Law & Order: Special Victims Unit, followed by a starring role in ABC Family Channel's TV movie Holiday in Handcuffs.

The Grammy-nominated Wilkerson is a member of the band Course of Nature.