Donald Trump Jr. and his wife Vanessa just welcomed a baby boy.

“It’s a BOY!!! @MrsVanessaTrump and baby are doing great,” Trump tweeted the happy news.

Spencer Frederick Trump arrived on Sunday, Oct. 21, weighing in at 7 lbs., 15 oz.

This is the fourth baby for the couple, as the little one joins older siblings,  Tristan Milos, 1, Donnie John III, 3, and Kai Madison, 5. Congratulations!