DNA tests prove David Spade is the father of ex-GF's baby born last month.

The funnyman rep's confirmed that Spade is indeed the father of former Playmate Jilian Grace's baby born August 26.

Spade who is 21 years the model's senior claimed earlier he would accept responsibility for the child if tests proved he was indeed the father.  They did.

"David and Jillian have been in close contact throughout her pregnancy and he plans to go see the baby during his first break from shooting TV sitcom Rules of Engagement," Spade's rep stated.

No other details about the Spade spawn, including its name, have been released.