Witness this — Katy Perry just underwent a massive hair transformation, and has said so long to her blond pixie.

The "Swish Swish" singer, who's spent recent months sporting an inch-long 'do, debuted a brand new, longer blond look yesterday (December 7) in an Instagram story (@hhkatyperry caught it in a still frame), and it's no subtle switch.

Perry first explained her former drastic buzzcut during a May interview with The Ellen Degeneres Showduring which she said it was the result of frying her locks.

“I don’t know if you’ve ever dyed your hair too blond," she told the crowd, "but sometimes your hair falls out. So that’s the way I handled it.”

Later, in an interview with Byrdieshe'd said she'd learned to embrace the short-hair change, and that it had done her wonders.

"Now I can’t hide behind it. I wanted to know that I could still feel beautiful and love myself without it. It’s fun, it’s freeing, it’s liberating, and I don’t think that 'sexiness' and 'femininity' is just one thing—long hair. I suppose the goal is to redefine what femininity means to me."

Katy Perry's Witness: The Tour Opening Night Photos