Shoe makes the woman

Jon was so happy with the results so far, but he wanted to go further in this exploration. He was physically the same size as Karyn in every respect, but feet. No matter how hard he tried, he never could slip his size 11 feet into Karyn's tiny size 7 shoes. Jon stared at his feet for a while giving Karyn a clue as to what he was thinking. "Oh, duh, you have no shoes on. Hmm, how should we fix this?" was Karyn's reaction.