We'll admit, we're rendered a little speechless.
The Twilight actresses are suddenly, very, very grown up in the rock ‘n' roll video, in which they play characters Cherie Curie (Dakota) and Joan Jett (Kristen) - two members of 70s girl band The Runaways.
Cue lots of writhing around on stage, some decidedly barely-there outfits and the usual sex, drugs and rock ‘n' roll that you'd come to expect from a 70s band movie.
Check it out for yourselves here, and let us know your thoughts in the comments box below...
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