During their visit, Ellen DeGeneres asked the twins to share some of the weirdest twin questions they get asked by fans. Ashley said that a common one was: "Are you Mary or Kate?" and Mary Kate said that she'd also been asked: "Are you the Ashley Twins?"
While discussing their new Elizabeth and James perfumes, the Full House stars said they decided to create two fragrances so as to give people options. The two later played a trivia game with DeGeneres in which they could answer with the words "her" or "me".
You can check out a clip of their appearance below.
Celebrity Families of 2014 [PHOTOS]