He'll be a Bruins fan for life after this!
Here's Elsa like you've never seen her before: with a five o' clock shadow.
The Boston Bruins chose a "Frozen" theme this year in their annual Halloween visit to the Boston Children's Hospital, and the photos will melt your cold, cold heart.
Dougie Hamilton and Matt Fraser arrived as Elsa and her sister Anna, with the rest of the players going as Kristoff, Sven, Hans and Olaf the snowman.
The guys even attempted to sing their own version of "Let It Go," according to Sports Illustrated.