Cherry Royal, who tours up here regularly, has nice feet and seems to genuinely enjoy foot play.
You could try also Mischievous Maddie:
External Link/Members OnlyI haven't seen her (yet!) but if petite girls with wee feet are your thing, she might fit the bill.
I've found that most girls are okay about foot worship, even if they don't specifically advertise it. Having said that, it is definitely worth checking first though, because some WGs won't entertain it.