the 173 lots include the issa dress as worn by kate middleton for her engagement photos , and designs similar to those seen on the fashionable feet of carrie and samantha in sex and the city .
the items , which are in immaculate condition , come from the lifetime collection of an anonymous single lady owner , and her family are now selling them and donating the money to charity .
the auctioneers are expecting at least double the number of people they normally get on a sale day .