Kelly Clarkson knows a thing or two about singing musical covers — and her latest performance has fans absolutely speechless.

Over the weekend, Kelly Clarkson surprised shoppers with not one but two a cappella flash mobs in Los Angeles, singing tracks from ... of Sweetgreen and inside a Blue Bottle coffee shop.

Yesterday (March 1) on The Kelly Clarkson Show ... lands are green and skies are blue / When all in all, we’re just like you / We love the all of you,” she sings on her cover’s chorus ...