Sisters-in-law may fight and they may have a difference of opinion, yet they will always stand up for each other. After a woman enters her 'sasural', her entire life takes a 360-degree turn. In a new world, where she knows nothing about anyone, it is her sister-in-law that makes her comfortable and becomes her best friend. And India's richest family's, daughters-in-law, Nita Ambani and Tina Ambani share an exactly similar bond. (Recommend Read: Abhinav Kohli Claims His Estranged Wife, Shweta…