Actor Alia Bhatt's sister Shaheen Bhatt penned book called 'I've Never Been(un) Happier' and Bhatt family came together to support her. Alia attended the book launch event in Mumbai. Filmmaker Mahesh Bhatt and actor Soni Razdan also came in to support Shaheen on her big day. Alia and Shaheen's half-sister Pooja Bhatt also marked her presence at the event. Filmmaker Karan Johar was also present.