A size 12 teenager who asked Holland & Barrett staff for weight loss advice was almost reduced to tears after being told she was "big for her age" and must "just eat and eat and eat".
Molly Woodley, who had been on medication which caused her to gain weight, said the experience at the Croydon store was "humiliating", the Metro reports.
"My jaw dropped and I turned around and left," she said. "I have never felt so embarrassed before – I just wanted to go home and cry."
Molly had gone into the store with her boyfriend to find out if there were any diet supplements she could take to help her lose weight before a family holiday to Turkey in July.
Holland & Barrett has apologised to the 16-year-old and said it would be fully investigate the incident. The company did, however, refute the suggestion Molly was told she must "just eat and eat and eat".
Molly's mother Heather is now calling for the employee in question to be sacked.
"This is exactly how eating disorders start," she told the Daily Mail. "It's ridiculous - that shop worker had no right to talk to my daughter that way."
"She's only a size 12, but if Molly was 50 stone, the shop worker still had no right to speak to her that way. It's shattered her confidence - she is so upset."