The Problem singer landed in hot water last week (03Jul15) when she and her boyfriend visited Wolfee Donuts in Lake Elsinore, California and were spotted licking the store's doughnuts and then eating one.

Grande has already apologised for making anti-American remarks that were also caught on camera, and store owner Joe Marin claims he has footage of her licking and spitting on his treats.

And now he's questioning why the pop star was buying food from his place at all - because she claims to be a vegan.

Marin tells Access Hollywood, "We don't have the vegan doughnuts... but she couldn't wait to eat my fresh doughnuts before she left."