announced their relocation to Florida in November.Their presence would be the ultimate seal of approval for the 3-day festival of contemporary art and its decadent party scene.Art Basel begins properly on Friday but its cultural and commercial hedonism has already begun, with $1,000-per-plate dinners, all-night DJ sets, a relaxation space run by Deepak Chopra and works on show by Johnny Depp and Pierce Brosnan — not to mention half a dozen respected art fairs.Sanchez was spotted Sunday in Miami with Camila Cabello hosting a holiday celebration for reunited migrant families, but then returned to Los Angeles, while her fiance has been more elusive.