McDonald's has denied claims a teenage girl was laughed at by staff after ordering six cheesburgers for her family.

Sabrina Hopkinson went to the fast food branch in Shoreham, West Sussex, where she reportedly called a "fat woman" after placing her order, according to her mother, Corrina. Ms Hopkinson said Sabrina then left the branch in tears and, when she returned to demand an explanation, she was laughed at, the Daily Mirror reports.

McDonald's has denied the incident, saying they are "pretty convinced" it did not happen at all.

The McDonald's branch on Eastern Avenue, Shoreham in West Sussex (Google Street View)

Ms Hopkinson said her 16-year-old daughter ordered six cheesburgers and four fries for her, her two sisters and brother.

The member of staff then reportedly shouted an insult back into the kitchen.

"Six cheeseburgers. I'm not joking this time. This fat woman wants six cheesburgers," the staff member reportedly said.

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Corrina told her mother she explained they were for her and her brother and sisters, but was laughed at instead.

McDonald's has said they carried out a "full investigation" and that the incident did not occur.

"We're absolutely convinced it did not happen," a spokesperson for McDonald's told the Independent.

"We've got CCTV of the counter area, and she just called the order back into the kitchen."

The fast-food chain said that although the CCTV footage does not pick up audio - and therefore did not record what was said at the time - they were "pretty convinced it did not happen at all."

In a press release McDonald’s also said it was talking to local police following "the threats made against our employees connected to the incident".