Chinese satin slippers for little girls - central London

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There just must be some obvious emporium somewhere in central London which sells cheap satin slippers in every colour of the rainbow? Anyone know? Market, maybe? Which one?

I need some (in ivory, green or blue) for dd's bridesmaiding on some sand dunes. Not expecting them to last beyond one wear.

Chinatown, bink? Wardour Street/Garrard Street kind of way?

Yes - I thought I'd do a wander, if no-one has a recommendation for a particular place.

The other option, which being over-ambitious I haven't ruled out, is trekking up to Colindale to the Oriental City mall on Sun afternoon. Which actually the kids would think rather fabulous.