Margot Robbie might be a superstar now, but 10 years ago she was just your average "Harry Potter" superfan.
The actress was chatting with Jimmy Kimmel about her new movie, "Tarzan" -- directed by David Yates, who also directed four of the "Harry Potter" films -- when the late-night host surprised her with a relic from her Potterhead days.
Behold Margot Robbie on her 13th birthday, in the thick of her "Harry Potter" fandom:
"I am wearing glasses, which I didn't actually need," she revealed. "I have 20/20 vision, and I lied to get glasses so I could look like Harry Potter."
Is there anything better than dedication? Classic.