Girls' Generation are leading the K-Pop invasion.

In their mostly colorful video for 'Mr. Mr.,' the nine-member, all-female pop group makes mischief in an operating room, a parking garage and more in this pink-painted clip.

The ladies are mysterious and a bit naughty, with the way they stare at the camera, tease the boys, show off their dance moves and strut their stuff. We're not sure what business the have in a medical facility, which is open to interpretation, but they certainly make it look good!

Each girl of Girls' Generation is lovelier than the next!

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