Cardi B made music history as the first female solo artist to win the Best Rap Album Grammy this Sunday.

But it looks like the 26-year-old rapper could use a refresher on her rock 'n roll records, as evident from a now-deleted Instagram story posted shortly after her win.

People were confused when the rapper thanked late rocker Tom Petty for sending a 'big' bouquet after she snagged her trophy.

The problem: Petty passed away in 2017.

Whoops! Cardi B mistakenly thanked late rocker Tom Petty for sending her a bouquet of flowers after her Grammy win on Sunday (above)

'Thank you Tom Petty for the flowers,' the I Like It rapper squealed while holding up the card which came with it.

The sweet attachment read: 'You’ve got a big heart. So big it could crush this town.'

Continuing Cardi said: 'I left the room but the flowers were very big. I want to say thank you so much. This is such a beautiful note.'

'Motherf***** love me, bro!' the mother-of-one concluded

Missed the memo? Petty (above in 2016) passed away in 2017

'Thank you Tom Petty for the flowers,' the I Like It rapper squealed while holding up the card which came with it

Her mistake was innocent enough, seeming to stem from the fact the accompanying card quoted the 1996 Petty track Walls (Circus), attributing the lyrics to the late rocker.

The actual sender remained a mystery, however.

People flocked to social media to point out her error.

'Looking at Cardi B's Instagram story knowing Tom Petty is dead,' @lexielouiise wrote along with an iconic GIF of a confused Nick Young.

Confused: 'Looking at Cardi B's Instagram story knowing Tom Petty is dead,' @lexielouiise wrote along with an iconic GIF of a confused Nick Young

Time-warp: Another fan mused that, 'Tom Petty wrote walls about cardi b we just didn't know it then'

Feeling Petty? One more Twitter user wondered if the card was an underhanded move from rival Nicki Minaj

Another fan mused that: 'Tom Petty wrote walls about cardi b we just didn't know it then.'

But one more Twitter user wondered if the card was an underhanded move from rival Nicki Minaj.

'Did Nicki Minaj do this to sabotage Cardi B? Petty Level: Tom Petty,' @erica_bond tweeted.

Petty was a Rock And Roll Hall Of Fame-er, earning three Grammys and 22 Billboard Hot 200 singles throughout his four decade career. The Runnin' Down A Dream singer passed away October 2nd 2017 after an accidental drug overdose.