MTO WORLD EXCLUSIVE: We've Got EXCLUSIVE PICS . . . Of Rapper Drake's YOUNGER SISTER . . . She's Very PRETTY!! (Plus Pics Of Her BABY)

Rapper Drake is an only child - on his MOM'S side. But his papa has a GANG of kids - including a little SISTER for Champagne Papi.

Drake's got a little sister named Steph - and here she is:

https://scontent-lga3-1.cdninstagram.com/vp/354daf0c56543fada6d8c28c2b662095/5A277F15/t50.2886-16/17412503_771842449689308_8708438984579088384_n.mp4

Here are pics of her daughter:

We know that Drake's daddy Dennis Graham is a PLAYA. So the news of his other kids isn't much of a surprise.