The new year is the perfect time to try out a new style and that's exactly what's Ke$ha is doing! The "Tik Tok" singer tweeted to fans on Wednesday, saying: "animals! I just shaved the side of my head! wanna see a pic???" Presumably they did as she posted this picture shortly afterwards. Keeping a few strands for a braid, most of the left side of her hair has been shaved up to the temple, creating an undercut effect. Whilst Robert Pattinson shaved off his hair recently, Ke$ha's undercut was a more popular style two years ago with Rihanna, Alice Dellal and Mel B all sporting the look then. What do you think of Ke$ha's New Year, New 'Do pledge?