Sunny Leone is all set to make her big Bollywood debut with Jism 2 in August.

While we can say that the role was tailor-made for her, the voice in the movie promos is not hers.

The Indo-Canadian porn star may get by with someone else dubbing for her in her debut film but being fluent in the language will really help her acting career in India.

We hear the actress is taking Hindi lessons, along with her dance lessons.

Here's looking at other Bollywood heroines, who could do with a better grip on the language.

Even though she's been in the industry for over eight years, and is one of the most popular actresses today, Katrina understands and speaks little Hindi.

While some of her earlier films were dubbed by someone else, the actress has been dubbing for her roles lately.

Word is she's also taking Hindi lessons.

British hottie Amy Jackson, who debuted with Ekk Deewana Tha opposite beau Prateik in February, played a Malayali girl in the film.

Saris and a tan may have made her character slightly believable but her dubbed voice gave her away.

Born to a Malayali father and an Australian mother, former Kingfisher calender hotte Lisa Haydon's knowledge of Hindi is quite sparse too, if her role in Rascals is any indication. 

London-bred Hazel Keech made her Bollywood debut in Salman Khan-starrer Bodyguard last year.

She's also starred in the Tamil blockbuster Billa and appeared in an item number in the recently released Maximum.

If she wants more acting roles in Bollywood, Hindi lessons seem to be a must.

Before her big Bollywood debut with Rockstar, Nargis Fakhri, who is of part-Czech and part-Pakistani descent, tried her luck in Tyra Banks' talent hunt reality show America's Next Top Model and did several modelling assignments in the US.

Since her Hindi was not the best, her voice was dubbed in Rockstar.

Sri Lankan beauty Jacqueline Fernandes took some help from dubbing artists for her earliest films. While we have been hearing her voice in the last couple of movies, she could sure do with some Hindi lessons.

South African model Candice Boucher has appeared in several renowned magazines, including FHM and Playboy.

She made her Bollywood debut with Sachiin Joshi's launch vehicle Aazaan last October. She does not know much Hindi, and did not need to speak the language much since she played a Moroccan girl in the film.

Actress Kalki Koechlin, who is of French origins, dubs for her film roles herself.

But as her filmmaker husband Anurag Kashyap puts it, if she starts thinking in Hindi too, she'll be unparalleled as an actress.

Brazillian model and now a Bollywood actress, Giselli Monteiro didn't have much to do in her first Hindi film Love Aaj Kal since she did not have too many dialogues.

She also starred in Red Chillies Entertainment's Always Kabhi Kabhi last year and has since been seen in commercials.