During one awards weekend, I was out and about meeting people and one night I came across Alexis Knapp from Pitch Perfect. She was super nice and cool to fans, but I didn't really recognize her right off the bat.
The NEXT day, I was at another event and ended up meeting her again. Now, mind you, I had no idea it was the same person because her hair was different and I wasn't really paying attention.
DUH DUH DUH! Lovely person, but it still makes me laugh that I had no idea I posed with her twice in a row.