You love Marnie the Dog for her cocked head, her dangling tongue and her crazy adorable (and super popular) Instagram. We love Marnie for her ability to imitate pretty much anyone who matters on the Internet, whether it's selfie king James Franco or teen meme Alex from Target.
In anticipation of her upcoming book Marnie the Dog: I'm a Book, we invited Marnie over for a classic cartoon costume party.
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