Kim Kardashian Goes Topless, Straddles Kanye West On Motorcycle In New Video "Bound 2"

They really should be wearing helmets. Kanye West premieres his "Bound 2" video on the Ellen DeGeneres Show on Tuesday, Nov. 19, with the much-anticipated clip first debuting online. The romantic-raunchy rap stars none other West's famous fiancee, Kim Kardashian.

The reality superstar, 33, appears topless (though bathed in modest shadow) as she slithers atop a motorcycle. At various points in the desert-highway-themed clip, North West's blonde, slimmed-down mama hangs out on the parked bike -- and, later, straddles and makes out with West, 36, as he simulates riding the hog through the desert landscape.

She's Kim K....And now another K ...lol