Two months ago, Justin Bieber called upon a flurry of big celebritie names to tease his What Do You Mean comeback single. 

The release countdown was as star-filled as could be with big names like Kendall and Kylie Jenner, Britney, Martha Stewart and Ruby Rose all taking part.

But yesterday, Michelle Obama outdid ALL of the other celebs to promote Justin's second single, Sorry. 

The FLOTUS appeared in a clip alongside Vine star, King Bach. 

It's only a small promo but her face says everything really: