Bollywood actress turned author Twinkle Khanna and her husband Akshay Kumar are celebrating the 18th Birthday of their son Aarav Bhatia today. On this occasion, Twinkle Khanna shared a family selfie of Aarav’s birthday party on her Instagram handle. In this photo, along with Twinkle, actor Akshay Kumar, son Aarav, daughter Nitara are seen in moustaches. Twinkle captioned: “Happy 18th birthday Aarav! Here is something I had written for you once and to keep loosening the strings and finally cutting them off this year has not been easy”.