Daddy Diddy's Kiddies Sitting Pretty

Diddy's baby mama looks ready to pop!

Kim Porter was spotted last night looking like she had a giant beach ball stashed under her sweater as she made her way out of Nello's restaurant in New York. She's not full of their lobster ravioli either... she's carrying twin girls!

While she's due mid-December, her "Bad Boy for Life" was nowhere to be seen -- he's shooting the "A Raisin in the Sun" TV remake in Toronto, in which he'll play the Sidney Poitier role.