Did Travis Scott pop the question?!

That IS the question after we spotted Kylie with a new ring on THAT finger Saturday as she drove home from sis Kim's baby shower. The pregnant teen was chauffeured by BFF Jordyn Woods in her black Bentley SUV and as she covered her face when she spotted our photographer, she accidentally-on-purpose showed off the new sparkler.

She also put the rock on display on Snapchat earlier in the day, teasing fans, as usual, about her status. Pregnant? Not pregnant? Engaged? Not engaged? YOU decide!