Diddy Announces Surprise Baby Girl Named After Him, Born in October

Diddy has added another member to the family ... announcing he's welcomed a baby girl into his life, who really takes after her old man.

The Bad Boy honcho broke the news Saturday, which came out of nowhere -- saying he has a new daughter whom he's effectively named after himself. Diddy writes, "I’m so blessed to welcome my baby girl Love Sean Combs to the world. Mama Combs, Quincy, Justin, Christian, Chance, D’Lila, Jessie and myself all love you so much! God is the Greatest!"

It's unclear when this kid was born, or who the mother is ... Diddy didn't spill those details. But, he's clearly happy about the latest bundle of joy, so we suppose that's all that matters. The baby marks the 7th child of his -- he has 6 other children from different women.

Of course, this is taking the internet by complete surprise ... as no one even seemed to know Diddy was an expecting father of late. We know he's in a polyamorous relationship with Yung Miami -- but there's no suggestion she's the mom, as she hasn't appeared preggo at all.

They were spotted out together as recently as this past week, and YM looks as slim as ever. It's also not entirely clear at this point if Miami was even aware of this child of Diddy's. She responded to a Twitter user who told her to hop on a podcast, as the public has questions.

Her reply was simply a pair of eyeball emojis ... which is pretty telling in and of itself.

We've reached out to Diddy's rep for more clarification ... but so far, haven't heard back. In the meantime -- congrats, Puff.