Spotify (06/19):

Blackout – 649,477
In the Zone – 646,323
Circus – 575,666
...Baby One More Time – 503,071
Oops!...I Did It Again – 483,928
Femme Fatale – 281,886
Britney – 199,940
Britney Jean – 134,967
Glory – 107,832

— Britney Daily Streams (@britneyonstream) June 20, 2021