Although southern star Tamannaah is making her debut in Bollywood with out and out masala movie "Himmatwala", she sees commercial movies as a biggest challenge for an actress.

"Commercial films are a biggest challenge for an actor, especially for a heroine because there are limited number of scenes in which that person has to perform. When you are part of a commercial film, conviction is even harder...Different age groups relate to commercial films," she said.

The actress, who has done around 27 films down South, clarifies she doesn't work for fame or stardom.

"Even when I was working down south, my main intention was to do good work and good movies. Fame, name, and stardom are great, but that's not the reason I work for," she said.

The 23-year-old's next Hindi film is with Akshay Kumar and she also has "couple of films lined up down south...I enjoy taking different projects."

In Sajid Khan directed "Himmatwala", Tamannaah will be seen romancing Ajay Devgn when it would hit the screens Friday.