Ke$ha might be having some close encounters of the third kind!
Because there's something MOVING in her leg! Is it an ALIEN?!?
SPOILER ALERT: No, that's not an alien. That's an electro muscle stimulation machine, often used when treating an injury. Maybe Ke$ha's dance moves on her current summer tour with Pitbull have her feeling a bit banged up lately?
[Image via Cousart-Rayne/JFXimages/WENN.]