Meet Irina Lazareanu, a 25-year-old Canadian model and, more famously, Karl Lagerfeld’s main muse. Admittedly, this clip is kind of mesmerizing. She makes getting ready to go out look like a total blast—far more appealing than the Van Cleef and Arpels party where she ends up getting her groove on anyway. It’s easy to see why Ms. Lazareanu has made such a splash in the fashion world. She is a striking multi-tasker on a stylish vengeance. For one thing, she can D.J. and dance around her apartment at the same time. Even more, she knows how to pick out the perfect $1.45 million diamond necklace to go with her emerald Zac Posen dress.

At the clip’s climax, Ms. Lazareanu fans herself in the back of a kitted-out stretch limo—around the time her hair starts “falling apart”—and tells the blotto fellow slouched beside her about the time she met Leonard Cohen in Paris. In fact, she says, Mr. Cohen, a fellow Canadian, is the reason she started writing. “I literally hyperventilated, and I never do that with anybody!” she tells her disinterested pal. More than a mere writer-muse-model-dancing-D.J., Ms. Lazareanu is also a musician. Having reportedly worked with Pete Doherty and Kate Moss on a Babyshambles tune in the past, she is currently working on a duet album with Sean Lennon.