Singer Pink is being kept awake at night by her baby daughter Willow Sage. The So What hitmaker and her hubby Carey Hart welcomed their daughter Willow Sage into the world earlier this month. \"Yeah!!!!!!!! up all night!!!! reliving my past. I\'ve just replaced techno music with ocean sounds — glow sticks with night lights,\" Pink posted on her Twitter page. \"Sleep is overrated anyway,\" she added.