Amanda Bynes is officially off the deep end.

TMZ reports that last night, Bynes was KICKED OUT of her Equinox spin class for some really weird behavior!

Gym sources tell TMZ that Amanda was working out in the 50-minute spin class hen she suddenly stopped participating in the class and aimlessly walked around the class looking for a new bike.  Once she found one- closer to the room’s giant mirror, she REMOVED HER TOP to reveal a tiny black strapless pushup bra…and no, it wasn’t a sports bra.

25 minutes later, Amanda stopped cycling again to go through her Louis Vuitton purse. Once she found her makeup, she started reapplying it in the middle of the class. And no, not just a little! The whole shebang!  Ten minutes into her massive makeup retouch, the instructor kicked her out, furiously saying that he couldn’t believe someone was doing their makeup in the middle of his class.

I don’t blame him!

After Amanda left, the class continued as usual.  Equinox reps say that Bynes hasn’t been permanently removed from the gym, just that one class.

What is going ON with this girl?!

Photo: FameFlynet

Tags: addiction, alcohol, Amanda Bynes, arrests, breakdown, car, celebrity, dmv, gym, kicked, license, scandal, suspension, vehicle