A bridal designer from Hertfordshire is reportedly suing Alexander McQueen and its creative director Sarah Burton for copying her design for the Duchess of Cambridge’s iconic wedding dress.

According to The Sunday Times, Christine Kendall has filed a breach of copyright claim with the London Intellectual Property Enterprise Court.

The claim states: ‘Our client is certain that her company's design was unfairly taken and copied … The claim is not against the Duchess and there is no allegation of wrongdoing against the palace.’

McQueen has responded, saying is ‘baffled by this legal claim’.

‘Christine Kendall first approached us at Alexander McQueen almost four years ago, when we were clear with her that any suggestion Sarah Burton's design of the royal wedding dress was copied from her designs was nonsense,’ said a spokesperson for the British brand.

‘Sarah Burton never saw any of Ms Kendall's designs or sketches and did not know of Ms Kendall before Ms Kendall got in touch with us—some 13 months after the wedding. We do not know why Ms Kendall has raised this again, but there are no ifs, buts or maybes here: this claim is ridiculous.’

Reports of the legal proceedings come just days before the Duke and Duchess of Cambridge are set to celebrate their fifth wedding anniversary on April 29th.

The full-skirted gown featuring long lace sleeves has most often been compared to that worn by Grace Kelly when she wed Prince Rainier of Monaco in 1956.