Lily always wants to be a princess on Halloween because that's what her mom is in real life. At least that's what Mitchell has led her to believe. This little fib has been kept from Cameron, who keeps unzipping his bull costume to show off his new svelte figure to any and all Halloween party guests. Cam later changes into his backup Mr. Rourke outfit. Lily becomes his little Tattoo after "the plain, the plain" truth comes out about her non-princess mom.