Sandra Lee Sandra Lee

Celebrity chef and lifestyle expert Sandra Lee appeared on Good Morning America Tuesday, and in a tearful interview with Robin Roberts, revealed that she is undergoing treatment for breast cancer.

Lee, 48, found out she had cancer on March 27 while in the middle of a photo shoot for People's Most Beautiful People issue. Doctors were able to catch the disease early before it was able to spread, and she's already had a lumpectomy. She's preparing for a second surgery, and looking at a double mastectomy in the future.

Fall TV preview: 2015-2016 new shows

The Daytime Emmy Award-winner implored other women to get themselves checked out by their doctor before it's too late.

"If I would have waited [to get a mammogram], I probably wouldn't be here," she said. "Girls have to know. Girls in their 20s and their 30s have to know. And I don't want women to wait, and that's why I'm talking."

Watch Lee's interview below: