Miss Moon

'Miss Moon' is a French animated television series that aired in 2016 and is currently ongoing. Miss Moon, a magical nanny, takes care of three children whilst their parents are away at work.

S1E38: The Marshmallow Tree
A female character touches a piece of magical marshmallow candy that came from a marshmallow tree, which makes her dress puff up into a big hot air balloon-like state to the point that she floats up into the sky, with Miss Moon and the kids hanging onto her. Thankfully, they're able to get the candy out of her grasp, causing her to deflate.