I'm a Slave 4 U – 39.6M
If U Seek Amy – 34.1M
Sometimes – 26.2M
Stronger – 26.2M
Lucky – 23.7M
(You Drive Me) Crazy – 23.5M
Piece Of Me – 22.8M
I Wanna Go – 21.7M
Till The World Ends – 21.7M
Everytime – 20.1M

— Fan Account (@britneyxspotify) January 1, 2022