Jenna Dewan Tatum was turning up the heat at the Buick 24 Hours of Happiness Test Drive event with a cheeky flash of side boob. The raven-haired beauty showed off her knock out body in a figure hugging orange dress that featured a daring plunge neckline and side cutouts. Her sexy ensemble was completed by a pair of white strappy heels, a metallic clutch and her shiny locks blow dried to perfection. Joining Jenna in her quest to outshine the cars on display was Mad Men's Christina Hendricks and Heroes Ali Larter. Sorry Buick but no ones looking at your cars.