Who is Rama Raju Mantena, lesser-known billionaire spending crores on 'wedding of the year' in Udaipur? Guests include Justin Bieber, Jennifer Lopez, Donald Trump Jr; his business is...

Welcome to the 'Biggest Wedding Of The Year! No not Ambanis, US Pharma king Rama Raju Mantena is set to host his daughter's wedding in beautiful city of lakes, Udaipur. But do you know who is this US billionaire, who invited big celebrities as guests to the we