Just in case you didn’t buy the collector’s edition of LEGO Harry Potter, here’s one of the behind-the-scenes videos from the set. It’s a cute clip that contains several moments of the cast goofing off while making the first four movies. It’s kind of crazy that these kids have been working on these movies for a decade…and that Hermione has gotten really hot.

Anyway, it’s a fun video for you Harry Potter nerds (like me!) out there.