Sounds tricky. Does it HAVE to be on the make-up etc theme? Can't it just be an elegant flower? It's so difficult when people have very particular requirements, isn't it?
If you want something that specific I'd say your best bet is a big rubber stamping/papercrafts show, like the one at Alexandra Palace on October 1-2. Don't know if you've ever been but it's pretty big, with LOADS of rubber stamps.
www.expressrubberstamps.co.uk organise the show. Hope this helps.
Helen