Victoria Beckham is suing the Los Angeles fashion label that made her own-brand jeans.

The Spice Girl is believed to be claiming Rock & Republic owe her as much as £50million for "loss of earnings" following her split with the trendy clothing company.

The pop star signed up with the fashion label to make her jeans, which sold for more than £200 a pair, in September 2004. But she parted ways with the label two years later amid rumours of rows with designer and owner Michael Ball.

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Victoria Beckham in her R&R jeans in 2004 which sold for £200

Hardly media-shy but R&R said Victoria was not doing enough to publicise her jeans

The normally publicity-hungry wife of England footballer David Beckham was reportedly criticised for not participating in enough PR opportunities.

A High Court listing shows that Beckham Brand Ltd, a company set up by Victoria and David to deal with their activities in the world of fashion, filed a claim against Rock & Republic last month.

There are no further details available because the claim form has not yet been served on Rock & Republic, but Victoria is reportedly seeking the payout as compensation for lost earnings as she believes the jeans were more profitable than previously thought.

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Dispute: Rock and Republic owner Michael Ball with the firm's president Andrea Bernholtz

News of the legal case follows recent claims that Victoria, 34, has not been doing enough to publicise her latest dVb denimwear line. Sales have reportedly been so poor in the US that a number of key retailers are expected to drop the range next season.

Kitson, a favourite boutique of LA celebrities, was among the stores rumoured to be planning to axe the label, with owner Fraser Ross speaking to the Press about the disappointing performance.

In an interview with the US celebrity magazine People, Mr Ross blamed declining sales on Victoria's lack of promotional activity.

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Victoria and David on his 33rd birthday wore matching monochrome outfits but she has not been spotted in her own label jeans for some time

"She's not supporting the line," he said. "It's not good for her brand and not good for her endorsements."

However he later retracted the comments, describing the rumours of a split as "ridiculous" and saying that Kitson would continue to stock the dVb range.

Victoria and David Beckham set up Beckham Brand to deal with their clothing ranges in May 2004, but records show that last year's accounts for the London-based business are overdue.

A spokesman for Victoria said: "We wouldn't be able to comment on it. It is a legal matter." Rock & Republic also refused to comment.

Controversial: Victoria's Jeans are reportedly not selling well in America