But this time she was a little classier in her response.
"The thing is, no one wants to be called the c-word, especially by an A-list celebrity on national television," Lala told Amy. "I was such a huge fan of hers, and it bummed me out. I thought that she had a little bit more class than that. Let's leave the trash up to people like me who do reality TV. Don't try to steal my thunder, girlfriend."
The "Vanderpump Rules" star admitted she posted and deleted a tweet aimed at J-Law twice before posting a third time.
The third tweet read, "Did Jennifer Lawrence really call me a 'c-nt' on 'Watch What Happens Live'? Annnnd talk about my mama? Bitch, you better pray I don't see you in the streets. You're one of the highest paid actresses on the planet... You claim you are 'pro-women.' And you call another woman a c-nt? You're gross."
Lala told Amy that her manager called after that tweet to say, "You either delete the tweet or you delete my info for the next 24 hours 'cause I'm not tryna deal."
J-Law's diss came about when Andy asked during her "WWHL" interview last week, "What do you think about the change in Lala this season and how the ladies are treating her on 'Vanderpump Rules'?"
"I'm sorry, but in the season before, we see Lala trying so hard to be nice," Lawrence replied. "And then she's like crying to her mom, and then she's like a total bitch. And then she's trying like really, really hard to be nice, and then she comes back this season and she's like, 'Hi, honey. Hi, sweetie.' I'm like, bitch, you's a c-nt.'"