Cat Deeley's So You Think You Can Dance Style - July 23CAT TELLS INSTYLE: "I found this insane dress in a vintage store in New Orleans. Don't tell anyone, but it was $38," says Deeley, who went wild to mark the 100th episode of the showwhich included a special performance by Katie Holmes. "Stella McCartney is producing cashmere sweater dresses exactly like it for fall and I've already ordered mine!" After adding huge hoop earrings from Topshop and Camilla Skovgaard shoes, Deeley looked to a music legend for beauty ideas. "We did huge hair, that would have made Tina Turner proud and a dark brown/black eye, taking inspiration from the shades of sequins on the dress," Cat says.