"Piece of crumpet" is a somewhat outdated colloquialism that refers to an attractive woman. There are many synonyms and alternative expressions that can be used to describe a beautiful or alluring individual. Some common options include "babe," "hottie," "stunner," "knockout," and "beauty." Other options might include more creative or less commonly-used terms like "siren," "goddess," "vision," "enchantress," or "seductress." Ultimately, the best synonym for "piece of crumpet" will depend on the situation, tone, and audience. It is always important to choose language that is respectful and appropriate for the context in which it is being used.