That is a very good looking tute (I didn't read it in depth, but the pictures look about right).
I've actually handled a real honest to Hugh Bunny Suit, surprisingly heavy duty (it was a club waitress version, so washable & tough make sense) but also in amazingly good condition considering it was made in 1967 and worn about 30 hours a week for a year (the former bunny who owned it was selling it to the costume shop I worked at). It had about a dozen steel ribs, buckram cups with extra padding (wonder bra style), an interior belt that was 1 1/2" wide and was fully custom tailored to the girl whom it was made for. The label even had the famous bunny logo and her name embroidered on it along with the date & club she worked in. The ears and collar were also buckram based construction.