Tabitha and Napoleon D'umo Welcome Son London Riley!

Credit: Napoleon & Tabitha Duomo

It's a boy for So You Think You Can Dance choreographers Tabitha and Napoleon D'umo!

On August 10 at 10:01 p.m. PST, Tabitha, 38, and Napoleon, 43, welcomed son London Riley, who weighed 7 lbs., 9 oz. and measured 20 inches.

"Tabitha was amazing pushing for three hours," Napoleon tells Us Weekly exclusively. "She was like an Olympian and he is our gold medal."

"I'm so proud I can't stop the mix of emotion going back and from crying to smiling," Napoleon adds.

Dubbed Nappytabs, the Sherman Oaks, California-based couple -- who began dating in 1994 -- received a Primetime Emmy Award for Outstanding Choreography in 2011. They were also supervising choreographers on America's Best Dance Crew for the first five seasons.