Back in 2010, the 26-years-old actress faced a similar nude photo scandal, reported Ace Showbiz.
At that time, a picture showed her looking into the camera without wearing any clothes while sitting down on her bed. It's said that the photo was hacked from her cell phone.
Dennings is currently working alongside actress Beth Behrs on the CBS comedy series about two poor waitresses, who dream of opening a cupcake shop one day.
It was nominated at the Emmy Awards and won Outstanding Art Direction for a Multi-Camera Series category. It premiered its second season in September.
Beside gaining fame, Dennings also found love from the series. She is now dating Nick Zano, her on-screen love interest.