The Insider.com

This is one ferocious fashion flashback. Supermodel Heidi Klum tweeted on Tuesday some outtakes from a past photo shoot that are sure to have you saying, "meow!"

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Donning cat ears, the Project Runway host channels her inner feline for the photos. She captions the pic, writing: "Photo blast from the past: baaad kitty!"

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Klum, 39, knows how to turn heads whether it be on the runway, red carpet or in print. Most recently, she stepped out at the 2012 Emmy Awards in a show-stopping, seafoam green gown by French designer Alexandre Vaultier that fashion critics couldn't stop praising. Complete with a slit up the side, Klum explained her sexy style, saying she wasn't ready to give up summer just yet.

What do you think of Klum's sexy-silly kitty pics?