Auntie Ky is back in LA!

Kylie Jenner has spent the past several days partying it up in Miami for Art Basel, but the reality star headed back home today to meet sister Kim Kardashian's newborn son Saint West. The 18-year-old paid tribute to her brother-in-law in her Yeezus t-shirt, which she paired with white jeans and a leather jacket.

We couldn't help but notice that the youngest of the Kardashian-Jenner clan went to the art festival without boyfriend Tyga. Something tells us their relationship is on its last leg, which may explain why she's been spending so much time with A$AP Rocky. Perhaps it's time to trade up?! T-Raww is allegedly none too thrilled about his girlfriend's new friendship with his rapper pal, though.

“Tyga’s not happy at how close A$AP and his girl are getting. Tyga doesn’t care if he is cool with A$AP, point is, it’s disrespectful for him to be all up in Kylie’s face when he knows damn well he and Kylie don’t have the most solid foundation," a source dished to Hollywood Life.

"Tyga’s equally upset at Kylie but won’t tell her that. He doesn’t want to appear weak or if he’s stalking her but her closeness to this dude is cause for concern. Tyga’s a rapper and he’s not stupid. He knows the game. He knows that some rappers like to go through women fast like they’re running a red light. He ain’t saying A$AP is that guy. But then again, you never know," the source added.

There's no shortage of things to film for the family reality show, that's for sure!