Whoa! Lady Gaga Goes Bald

Lady Gaga is all about irony.

For an acoustic performance of her new song "Hair" (off her new album, Born This Way), the 25-year-old singer debuted her wildest look yet: a newly bald head.

(It's unclear if the singer actually shaved her head or simply wore a cap.)

Appearing on England's Paul O'Grady Show, Gaga slowly ran her hand over her scalp during the piano-driven song. Midway through her performance, Gaga paused for dramatic effect, then placed an aqua-colored wig on her head.

Why the shocking makeover? "You're even freer without hair," Gaga told MSN in May.