And the knives are out! Blac Chyna may have just called out Kylie Jenner's new cooking segment. The model — and Rob Kardashian's girlfriend — appeared to shade the Keeping Up With the Kardashians star via Instagram on Monday, February 22.

It all went down after Jenner, 18, promoted her new Cooking With Kylie web series via Instagram. Hours later, Chyna, 27, posted a screenshot of her Cooking With Chyna Instagram video to her personal account. (Chyna began a separate cooking account in December 2015.)

"Bitch Bye," Chyna captioned the photo. "Follow @cookingwithchyna #InfatuatedWitChy." She also included a sarcastic crying smiley face and chicken drumstick emoji.

the first episode of Cooking with Kylie is now up on & The Kylie Jenner Official App

A video posted by King Kylie (@kyliejenner) on

Jenner and Chyna have a complicated history. Jenner, of course, is dating Chyna's former fiancé, Tyga, 26. The exes share son King, 3. Chyna's new relationship with Rob, meanwhile, isn't sitting well with Jenner.

"Kylie says Rob stabbed her in the back," an insider previously told Us Weekly. "This is not about Kylie for Rob, though. He was always cool with Kendall and Kylie. For him this is about the whole family and his way at getting back at them."

Another family source added: "The family is in a bind trying to be supportive of Rob’s life while being sensitive of Kylie’s relationship with Tyga."

BItch Bye 😂🍗 Follow @cookingwithchyna #InfatuatedWitChy

A photo posted by (@blacchyna) on

The new romance has helped Kardashian out of his shell, though. It's even brought him closer to his mom, Kris Jenner. "They reconnected and had a long talk," a source told Us. "So if it took Blac Chyna to get him here, so be it."

Want stories like these delivered straight to your inbox? Sign up now for the Us Weekly newsletter!