Katy Perry & Natalia Kills Hang Out at Six Flags – Literally! (PHOTO)

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Hold on tight! Katy Perry and Natalia Kills were like, woah, on the Superman ride at Six Flags in Chicago!

Natalia Kills (one of the best stage names of all time) is currently opening for Katy during select tour dates in US, Mexico, and South America. It’s nice the see the girls hang out — literally — and have some fun on the side! 

On the work front, Natalia just released a brand-new video.

Peep Natalia’s video for “Free,” featuring will.i.am from Black Eyed Peas, below: 

Celebuzz had a chance to talk to this musical “killer” about her awesome name, her new album, and being compared to Lady Gaga. Read the interview right here.