In an interview with Mashable, the Cut To The Feeling songstress had this to say:
“I don’t know when that started, or why that started, or how! But it’s pretty hilarious. My bandmates have begun teasing me about it. Now, I’ll be leaning on a wall and they’re like, “QUEEN OF LEANING ON A WALL” and I’m like [exasperated tone] 'Okay, okay.'... I’m actually a little shy about it but it’s sweet."
SOURCE: PopCrush + YouTube