The phrase "mouse ears" refers to the round, iconic ears of a mouse, typically resembling those of cartoon characters like Mickey Mouse. Full definition
And the cutest part about the whole outfit would have to be the sparkly mini mouse ears. (outfittrends.com)
I love how the designer makes it possible to wear Mickey Mouse ears on a dress or a cartoon - covered varsity jacket and still look chic. (stylisticreaction.com)
Complete the look with these super cute Minnie mouse ears as who said only kids and teenagers can have all the fun? (outfittrends.com)