Tyga took his ex on guided tour of Kylie Jenner's home when she was busy at the ESPYs

Kylie Jenner's not going to be happy about the latest revelation concerning Tyga's ex Blac Chyna.

When the 17-year-old was busy at the ESPYs supporting Caitlyn Jenner, it's believed Blac got a guided tour of Kylie's LA home by Tyga.

The reason? She wanted to check the $2million property was suitable for their two-year-old son, King.

 But let's make this clear, Kylie didn't know about the visit...as she was on family duties. Check it below!

"Blac had a field day inside the house," a source told Hollywood Life: "She walked through every single room critiquing the place, mostly saying s**t like 'that's ugly' and this girl has no taste."

However, she reportedly did approve of the room Kylie set up for their son.

The source added: "She was actually quite pleased with the house and King's room and though it was kid-friendly. But as far as Kylie's taste, Blac almost threw up at it."