Nostalgic Halloween costumes are often the most loved and memorable. Vintage cartoons rank pretty high in the nostalgia department, and The Flintstones were a favorite of mine when I was a kiddo.

Hailey Bieber appears to be quite the movie buff this Halloween! The model, 26, donned not one, not two, but three costumes for spooky season so far, and each one had a special pop culture reference.