Cheng offers tourists in Hong Kong "dress-up experiences" that use fashion as a way to explore culture. She was inspired by geisha makeovers in Japan and other cultural dress activities she has taken part in on her travels. "I think if tourists wear the qipao like us, then they can go into the culture, (explore) the old Hong Kong style," she says, adding, "It's an experience of knowing a culture deeply."
But for many tourists traveling abroad, the idea of "dressing up" in another culture's clothing can raise questions about cultural appropriation -- and make them reluctant to take part. So, what are the rules?