From big ones to small ones and even ones that block out the sun, the bum is back! This cheeky little guide on the world's most popular body part is bouncing with fun, facts and quotes to help you celebrate the junk in your trunk. SELLING POINTS: * The backside is enjoying a cultural moment in the spotlight, with a Vogue profile claiming "We're Officially in the Era of the Big Booty" and celebrities such as Nicki Minaj, Jennifer Lopez and Kim Kardashian famed, in part, for their bottoms. Illustrated.