Mariah Carey “doesn’t know” quite a lot of people these days.

A guest on Andy Cohen’s Watch What Happens, Carey threw diva-level shade at Ariana Grande and Demi Lovato while playing the game “Plead the Fifth.”

Carey deftly dodged questions during the game about her recent breakup with James Packer and her rumoured romance with backup dancer Bryan Tanaka, but when queried about Lovato and Grande, the Grammy-award winning singer got real.

Several months after Lovato went off via social media on the star of Mariah’s World about her treatment of Jennifer Lopez, Carey famously denied knowing the singer.

“I don’t know her either and so I wouldn’t say anything to her,” she said about Lovato, 24. “She should come up, introduce herself to me, say, ‘Here’s my opinion, what do you think about it?’ That’s how you handle s**t, OK?”

Mariah Carey went off on Demi Lovato.Source:AFP

Carey also spoke about Grande during the show.

It comes two years after Carey dismissed a comparison between herself and the pint-sized pop singer during a radio interview.

When Cohen asked Carey pointedly whether or not she knows the 23-year-old Nickelodeon star, Carey flatly says, “No.” “…I don’t know ... Honestly, I’m not familiar. I listen to hip-hop more than I listen to pop music.”

The “I don’t know her” response has become somewhat of a signature response for Carey.

In the early 00s she was asked what she thought about other pop singers like Jennifer Lopez, and famously gave that response.

Lopez was later questioned by Wendy Williams on what she thinks of Carey saying she doesn’t know her.

“She does say that. She’s forgetful I guess.”

This story originally appeared on Fox News and is republished here with permission.