Mark-Paul Gosselaar and Catriona McGinn: Expecting!

Mark-Paul Gosselaar and Catriona McGinn are expecting their first child together, the Saved By the Bell legend and his wife confirmed on Monday.

"Mark-Paul Gosselaar and wife Catriona are thrilled to announce they're expecting their first child together in September," his rep says in a statement.

The couple tied the knot in July of last year. Gosselaar is already the father of son Michael, 9, and daughter Ava, 6, with ex-wife Lisa Ann Russell.

"We are really excited for the arrival of our new addition. We've always wanted a big family," Gosselaar says. "The kids are looking forward to a little sibling."

"[They] are asking a lot of funny questions right now. Catriona's great with my kids," the Franklin & Bash star adds. "My kids absolutely adore her."

Congratulations to the whole family!