I'm watching Good Omen's season 2 right now. There's a scene where a madam is unable to describe what she does so is reduced to euphemism about being a seamstress and "sowing buttons" (you have to watch the show to get the context). And the angel and the demon are trying to help two women get together. And let's not forget the gay guy in a dress hitting on an archangel with a faulty memory who thinks he's human.
I'm familiar with the guild of seamstresses from terry Pratchett books.
A lady of negotiable affection. One who might provide a certain intimate service for reasonable price, and is unlikely to have any use for a needle and thread, unless that's the way the client likes it.