Kylie Jenner is arguably stepping up as Tyga's now longtime GF and helping him raise his child ... the other scenario -- she's pissing off baby mama Blac Chyna something fierce.
Kylie took 3-year-old King Tuesday to play a round of miniature golf in Sherman Oaks. Tyga also tried his hand on the putting green.
It's unclear how Chyna feels about her one time mortal enemy. She hedged last week during a Facebook live session.
We're on the lookout for her reaction.