This lingerie set is one-size fits all. It stretches out very far and can fit anyone. Included : Catgirl lingerie set + Cattbell collar.
Overall a pretty good product. Only complain is that the bell of the collar can be easily torn out (happened by accident) and the connection behind them broke as well, despite not wearing it so tight. Made a workaround for both by using those pins that were given alongside the products (had a big order, don't know, if it came alongside this set specifically).