Sideboob is taking the world by storm, but it might have a little competition.
Female stars have been stepping up their game on the red carpet, posing in daring backless dresses that perfectly display their famous figures. From Julianne Hough to Zoe Saldana, some of Hollywood's brightest fashionistas are ditching the low-cut look and opting to give onlookers a skin show from behind.
As Anne Hathaway would say, "It's business in the front, party in the back!"
See more celebrity sexy backs below: