It’s official: Grumpy Cat will finally debut in her own movie Grumpy Cat’s Worst Christmas Ever. This twist on a classic Christmas tale tells the story of a young girl who makes a wish for a cat, and ends up with Grumpy Cat. The internet sensation will be played fittingly by resident Parks & Rec grumpster Aubrey Plaza. Don’t miss it: this cat is out of the bag on November 29th on the Lifetime channel.