I don't know if she'll accept a tail warmer; the ear warmers have been dragged under the futon (by the cat) on the patio, I think in hopes that we'll forget about them and not put them on her.
A few years ago I made a silly, pink, ruffly, Elizabethan-style collar for her and she wore that and loved it. She strutted around in that. She was stylin'. :D