Khloe Kardashian is laying down the law of her land with one of her sisters.

The mother-of-two recently shared that she will not allow her daughter, True Thompson, sleepover at a Kardashian-Jenner sister’s home.

During a recent episode of Vanity Fair’s lie detector test, Khloe was hooked up to a lie detector and asked a series of questions by Kourtney Kardashian.

Kourtney later asks, “Are you ever going to let True sleep over at my house?”

“Probably not,” Khloe quickly responded.

Kourtney followed up by asking Khloe what her reason was for not allowing True to sleep over.

“I don’t think we have enough time on this show for what the reason is,” she said laughing.

Kourtney finally got to the question we’ve all been wondering: “Are you sleeping with Tristan?”

“No, I’m not. I’m really not,” she adamantly responded.