Rachel Zegler Gotham/GC Images Rachel Zegler showed off her colorful side at a Swarovski event in New York City. The 23-year-old actress was photographed entering the flagship store on Tuesday, July 16, in a multicolored mini dress featuring a sweetheart neckline, cinched-in waist and a flared pleated skirt. She accessorized with a black semi-circle purse…