The comedian and Whitney star admitted that she often had no money for daily expenses and was forced to take "embarrassing" jobs in order to bring in enough income to live on.
"I did some pretty embarrassing modelling, like catalogs and QVC. I know there's probably a stereotype where all pretty girls think they're unattractive, but modelling is the worst thing for your self-esteem, because you're never pretty enough, you're never thin enough. Have you read my YouTube comments? Everyone thinks I'm 55," Cummings said in an interview with The New York Times.
"There was a time in LA when I drove to 7-Eleven to go grocery shopping, and I locked my keys in my car, which wasn't insured. My wallet was in there, and I couldn't call AAA, because I only had $7 (£4.50) in my bank account. It was one of those moments where I was like, 'Okay, I literally have nothing right now'."
Cummings has defended the decision to film Whitney in front of a live studio audience as well as the sitcom's use of the multi-camera format, saying it suits stand-ups best and lends more credibility because of the use of real laughter.
Whitney premieres Thursday, September 22 at 9.30/8.30c on NBC.
Watch a clip from Whitney below: