1. When Selena Gomez left this comment on Justin Bieber's Instagram, where he asked people to stop hating on his new girlfriend:
2. When Justin Bieber shaded her back:
3. And when Selena ended the shade-fest with this comment. #AllLove
4. When Erykah Badu called out Jennifer Lopez for using the Facetune editing app.
5. When Lindsay Lohan said Ariana Grande was wearing too much makeup in this Insta:
6. And this one, too:
7. Aaaaand...this one as well:
8. When Andy Cohen shaded Donald Trump on Kate Hudson's Insta:
9. And when Justin Bieber commented on Scooter Braun's Insta, shading UK boy band Rixton.
10. When Charlamagne tha God called out Chris Brown on his Instagram:
11. When Calvin Harris spilled the tea about his relationship with Taylor Swift, calling her controlling, with this comment:
12. When Remy Ma commented "Home-going" (aka funeral) on DJ Clue's Insta about Nicki MInaj:
13. When Bob Saget jokingly shaded John Stamos, saying he should start doing commercials:
14. And when Brody Jenner jokingly shaded Liam Hemsworth, calling him a "barrel dodger."
15. When Demi Lovato called out Perez for screenshotting her Twitter likes and causing drama:
16. And when she commented this on Nicki Minaj's now-deleted Insta, which showed Demi trying to get in her photo at the Met Gala:
17. Demi explained further on her own Insta caption:
18. When Azealia Banks commented this on Cardi B's post that called Banks a "hater."
19. When Nene Leakes owned Kim Zolciak and her daughter for saying Nene has cockroaches in her home:
20. When Rob Kardashian called out Blac Chyna in the comments section for blocking him:
21. And although it wasn't on Mariah's actual Insta — when Demi commented this shady statement on a meme:
To sum up, celebs commenting on each other's Insta:
