EXCLUSIVE

Kenan Thompson's living his best life in 2018 -- he turned 40, earned his first-ever acting Emmy nomination and now he's become a father for the second time to a baby girl. Sweet trifecta!!

The 'SNL' star's wife, Christina Evangeline, gave birth to Gianna Michelle Tuesday night in Florida. Little Gianna weighed a healthy 6 pounds, 6 ounces. The couple already has another daughter, Georgia Marie, and the two are already inseparable and obsessed with each other.

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Christina posted a video on social media announcing her pregnancy only days before she was ready to give birth. TMZ broke the story ... Christina gave birth to their first child back in 2014.