#StillAJam.
But haters gonna hate, and many non-fans have claimed that along with many of her other songs, Britney can't sing and relies on auto-tune.
Um, rude.
Well, now, we have the proof that the princess of pop earned her crown, because gurl can sing.
The unedited, non auto-tune version of the song leaked this week on YouTube, and it's SO impressive to hear how she sounds.
So, if you ever doubted her talents, listen to the below audio and be reminded why Britney was as huge as she was (is).