 Janet Jackson, Usher, and Vice President Kamala Harris are among those set to appear. Jim Cressula, CBS News. It's the wedding of the year. In India, Asia's richest man, Mukesh Ambani, is throwing it for his son. In May, he took guests on a pre-wedding cruise from Italy to France. That included performances by Katy Perry and Pitbull. Excuse me, excuse me.