wannabeanimator:

• Interview with Alex Hirsch, creator of Gravity Falls

“The primary relationship in the series, between a brother who is kind of neurotic and obsessed with the paranormal and his goofy, wacky sister, came from my real life.  I have a real twin sister, and I really was that neurotic kid who would carry 16 disposable cameras everywhere I went, and my sister really did wear wacky sweaters and have a different ridiculous crush, every week.” Read the rest on Collider. Thanks to mrcontro for suggesting it!