AceShowbiz -

Is stress causing Drew Barrymore to overeat? The 35-year-old actress has gained a lot of weight since announcing her divorce from her husband of three years, Will Kopelman, in April. The "Blended" star, whose weight often fluctuates, looked bigger than ever when she stepped out for lunch with her friend in New York City on Friday, May 6.

Drew wore a billowing, ankle-length dress in white with a delicate blue pattern of fronds during the outing. She paired it with blue knitted jumper and blue flats. She was all smiles as two fans stopped her to take a selfie in the middle of the street.

While she said she's "happy" after splitting from the art consultant, a source tells OK!Magazine.com that "Drew's in bad shape." The so-called insider adds, "She's really upset she's put on so much weight - she says she's gone up two jeans sizes from comfort eating."

The mother of two reportedly believes she was the root of the problem in her third failed marriage and her friend says she's beating herself up. Her pals are allegedly worried that her comfort eating is getting out of control.

Drew and Will said in a joint statement when announcing their divorce last month, "Divorce might make one feel like a failure, but eventually you start to find grace in the idea that life goes on. Our children are our universe, and we look forward to living the rest of our lives with them as the first priority," The estranged spouses have two children together, 3-year-old Olive and 2-year-old Frankie.