Mark-Paul Gosselaar and Catriona McGinn Mark-Paul Gosselaar and Catriona McGinn

Mark-Paul Gosselaar is going to be a dad again!

The Saved by the Bell alum and his wife Catriona McGinn "are thrilled to announce they're expecting their first child together in September," the actor's rep told People.

Gosselaar has two children from a previous marriage.

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