also chichi, "extremely chic, sophisticated," also "pretentious fussiness," 1908, from French chichi "airs, fuss." Perhaps, like frou-frou, imitative.
Examples from the Web for chi-chi
Local food cultures are rising up everywhere, not just in yuppified suburbs and chi-chi cities.
Last week, I was invited to the penthouse suite of the Morgan, a chi-chi boutique hotel in midtown Manhattan.Burger King’s New French Fries Took Ten Years to Develop|Daniel Gross|September 24, 2013|DAILY BEAST