Not exactly the warm-up ritual you were expecting, is it?

Before going onstage, Lily Allen shared a video of herself dancing around to Drake's "Started from the Bottom" while topless and in Spanx.

Clearly making fun of herself, the mom of two wrote, "Cool mum #drakespanxdance."

Let's be real -- this is anything but sexy, but at least the quirky singer has a good sense of humor about her. In the vid, the 29-year-old covered her cleavage as she gyrated and sang Drizzy's jams.

The singer took a sabbatical from her musical career from 2009-2013. But we are glad to see she's back in fighting (spanxing) form! What will Sheezus think of next?!