And the tension between Mariah Carey and Jennifer Lopez is continuing into 2021.
On New Year's Eve Andy Cohen and Anderson Cooper were hosting CNN's nye celebration and interviewed Mariah Carey.
During the interview Mariah Carey pauses and asks what is going on because she could hear music in the background.
Turns out Jlo was performing for Dick Clark's New Year's Rockin Eve, and Mariah's face was priceless when she was told who was performing.
Now if you didn't know there was tension between the two women, Mariah goes into detail in her recently released memoir "The Meaning of Mariah Carey," where she explains her ex-husband Tommy Mottola tried to derail her career.
At the time Mottola was managing Jennifer Lopez's career and tried taking a sample she used in her single "Loverboy," and give it to JLO.