Frilly tuxedos, teased hair, and ruched gowns—yes, last night’s Dancing With The Stars was head-to-toe prom-themed. But Karina Smirnoff and Jacoby Jones went for an Old Hollywood look rather than '80s rad-ness for their steamy rumba to Rihanna’s “Stay." “I wanted my gown to be soft and romantic," Smirnoff told InStyle.com. "I channeled the iconic, Rita Hayworth, when designing it.” As for partner Jacoby Jones, he had a shirt, but then... “we talked about it and decided that this was the moment to go shirtless!” Scoring 24 out of 30 certainly helped her partner make up for the high school prom he was kicked out of! Click "See the Photos" for more details on their weekly costumes, and tune in to ABC at 9/8c tonight for the live results show.