Pink, 32, has been on a hiatus since giving birth to Willow Sage Hart, her first child with her beau, motocross star Carey Hart. Her last album with new material was 2010's Greatest Hits... So Far!!!, which boasted chart-topping singles "Raise Your Glass" and "F***** Perfect" along with her best singles of all time like "Get the Party Started" and "U + Ur Hand."
Since Pink hit the scene with cotton candy-colored hair in 2000, several stars have followed suit with the punchy color, especially lately.