Can prime and proper be sexy? Hell yeah. Kinky too, as in "Belle de Jour," where the upperclass housewife trips off to her day job in a brothel wearing prim little Yves Saint Laurent shifts and buckled-toed Pilgrim shoes.
The champagne Roger Vivier shoes, top left, currently for sale on ebay, are practically an exact reproduction of Belle's shoes. The same seller is offering them in black, too, at prices much lower than retail -- alas, she's only offering size six, and the auctions are almost over. Luckily, the Pilgrim shoe (search online for "ornamented" or "buckle detail" shoes) are fashionable again, so other versions can be found. The gold buckled Delman shoes are available at Zappos. Bluefly has versions by Dolce & Gabbana and Prada. Heck, even Nine West has a pair. Then there's BCBG Girl's hoochie mama version, which misses the point entirely.
Of course, one could always just buy a pair of shoe clips and convert a pair of plain pumps into Pilgrims but I think I'm going to wander down to a local shoe emporium and find a pair or two to try on.