Superstar Mahira Khan is marking her birthday with intimate celebrations around friends and family. The actor, who turns 37 this year, chimed in her special day by cutting a cake with son Azlaan. In a viral video shared by various Instagram media pages, Mahira is spotted in a beige shirt blowing the candles before she invites her son to cut the cake with her. Mahira is also spotted making a wishing before she holds the knife to do the honours.