It is not clear whether she has been treated by the Frenchman but her claim relates to two articles in Hello! magazine which gave the impression that she endorsed him.

Sebagh pioneered Botox injections in the early Nineties, as well as collagen, vitamin and antioxidant injections. He is famous for his eyelifts and has also launched a range of skincare products with model Cindy Crawford called Meaningful Beauty.

Sebagh has a home in Paris but works three days a week at a clinic in Wimpole Street. His clients include Madonna, Elle Macpherson and Meg Ryan.

Her lawyers made the application, which is usually issued in order to force defendants to produce documents or records before an actual claim form is issued. In her application Campbell is said to be seeking at least £50,000.

The supermodel is famously litigious. She sued the Mirror for invading her privacy when it printed a picture of her leaving a Narcotics Anonymous meeting in Chelsea. She won only £3,500 - but Schillings then presented the Mirror with a £594,470 bill for costs.

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