I have a really cute pair - pink, printed with kitties, pawprints, balls of yarn and milk cartons. I, also bought a couple of pairs of just bottoms and wear them with a T-shirt. When the weather is warm, though, I schlep around the house, in nightshirts.
A few years ago, my mom bought me a purple nightshirt, with a kitty on it? Perfect: my favorite color AND a kitty. HOW did she know?