Cardi, 26, shared a picture of her and Bruno Mars in her first post back.
"Ok so I’m back from retirement to announce I have a brand new song coming out Friday at midnight with Friday at midnight with @brunomars #TwoGrammyWinningArtist,” she wrote.
The hashtag was pretty telling, considering the rapper deactivated her account two days prior because of backlash over her 2019 Grammy win.
What do you think of Cardi's return to Instagram? Let us know in the comments.