Jennifer Lopez and Rodrigo Santoro film a night scene for "What to Expect When You're Expecting." In this scene Lopez' character appears to be distressed as she stumbles to an awaiting cab. (July 29, 2011)

*Jennifer Lopez believes herself to be a ”really great actress” and feels confident in her abilities.

The entertainer and “American Idol” judge – who has appeared in critically panned movies “Gigli” and “Jersey Girl” – tells the new issue of Vanity Fair, “I think I’m a really great performer. I think I’m a really great actress. I feel confident in those things – that’s a better way to say it.”

The 42-year-old says she’s not as confident in her vocal abilities, but still believes there is a place for her in the industry.

“I’m not as gifted a vocalist as some of the girls that are out there, but I know how to communicate, she said. “When I think of great vocalists I think of Marc, of Luther Vandross, of Whitney Houston.”

Despite her reputation as a diva, Jennifer – who is currently shooting a role in ‘What to Expect When You’re Expecting’ – believes it is a “false perception” because she is a “very hard” worker.

“Maybe because I was successful, I was a woman, I don’t know. But I don’t put on a lot of airs. I work very hard,” she said. “Being a diva or materialistic is a false perception. I’m not that. I just love surrounding myself with beautiful things.”