The Ra.One actor is hosting the Indian Grand Prix F1 after-party event on Sunday, Mid-Day reports.
"The maximum capacity for the party is 1,000, and GaGa's show is completely sold out," said the former model.
Lady GaGa has already arrived in India ahead of her first concert in the country.
"I am finally here + what a dream come true. Performing at Formula 1 in INDIA, and my first day here I reached #15millionmonsters (sic)," she posted on Twitter on Thursday.
Rampal defended the high cost of tickets to the gig, which went on sale at Rs40,000 (£533).
"One has to understand that the costs are very high. Maybe if we had a bigger venue with capacity for more people, we could have gone easy on the price," he explained. "But with less people, it becomes difficult to lower the price. After all it's business, and we have to break even."
DJ Roger Sanchez and Edward Maya will also be performing during the F1 three-day event.
GaGa's 'Born This Way' and 'Judas' have both released in Bollywood remix versions.
