Christina Aguilera likes to be free

London: Singer Christina Aguilera says that she chose to appear nude on the cover of her seventh studio album because she likes to be free. "I like to be free. Sometimes, the less clothing, the better! I`m just comfortable in my skin and my body. Had I had this beautiful sweater...I would have worn that on the cover of Lotus," said the 31-year-old on the ‘The Ellen DeGeneres’ show. It is also said that Aguilera recently had butt implants as she wanted to show off her booty at the recent American Music Awards, reports a website. IANS