Janhvi Kapoor is celebrating her 23rd birthday today. The actress is a star, and an even bigger star in the making. The industry is currently ruled by stalwarts like Deepika Padukone, Priyanka Chopra and Kangana Ranaut. But Janhvi is sure to make a mark and command the box office, sooner or later. Here are 5 reasons we think she could reign at the box office.