A big congratulations arein store for Pink and her husband Carey Hart!The singer announced she’s pregnant with her second child, via an Instagram photo that shows her sporting a big baby bump and standing next to the couple’s five-year-old daughter, Willow Sage Hart, who they welcomed into the world in 2011.”Surprise!” Pink wrote.The news isn’t a huge surprise considering the singer sat down on Good Morning America in May and gushed over being a mom, hinting that she definitely wanted more kids.”I love being a mama,” she smiled. “I made a choice a long time ago that I was going to have a successful family and that is my absolute number one goal in life.”