Donald Trump has a brand new apprentice -- at home.

The tycoon has told "Imus in the Morning" on MSNBC that his wife Melania gave birth to a baby boy this morning. It's her first child, his fifth.

Trump says the new baby doesn't have a name yet but is already making him feel younger. The youngest of his other kids is a preteen, the older ones are in their 20s.

Melania Knauss Trump is a model and actress who's been on the cover of Vogue and British G-Q magazines. The couple married in January 2005.