The actress, who turns 25 tomorrow and had to ask for a day off work to celebrate it, will be having a quiet family gathering, Mid Day reports.
"Every year, I celebrate the day with family and close friends. This year will be the same, with a quiet dinner after I show them my second film."
Sinha, who stars with Akshay Kumar in Rowdy Rathore, said her parents are yet to offer their verdict on the film.
"Dad is cool; I'm the apple of his eyes. Mum knows me in and out, and whatever she says is for my betterment."
The actress, whose last release was Dabangg in 2010, added that she does not feel there has been any gap in her work schedule.
"I've been working shooting for the five films, besides doing ads and shows. So I haven't felt any gap as such," she said.
"I want to do better films, play better characters, keep working hard and grow as an actress."
The actress, who shot to fame with Dabangg, has three more releases this year: Dabanng 2, Joker and Son of Sardar.
Watch the trailer for Rowdy Rathore below: