By Chiara Fiorillo Celine Dion was spotted playing air guitar to Bon Jovi’s “Livin’ on a Prayer” as she made a rare public appearance alongside her twin sons at the NHL game on Thursday. The 55-year-old Canadian superstar enjoyed watching the Boston Bruins take on the New York Rangers at Boston’s TD Garden. She was seen in the stands with her 13-year-old twin sons Nelson and Eddy who donned Bruins apparel. The “My Heart Will Go On” singer donned a pink suit and matching blouse – but her elegant attire didn’t stop her from letting loose at the game and cameras spotted her singing and dancing al…