Doja cat is a star on the wise in America with her single "say so" coming viral on the social media app called Titkok with a simple dance to it.
This helped boost her career and made her get nominated for awards.
She was on a track with Grande but she was still angered that Grande never made a video to it as it could of been a hit but now it's to late.
Doja was at Grammys and was caught talking to Grande at her one point  and rolling her eyes  as she walked away from her , this may mean there is something go on with the two singers