Atomic Kitten launched their clothing range exclusively through department store Bhs earlier this year. Branded AK, it is aimed at girls aged six-13 years and features a tab with a cat's paw mark on a white background.
Levi's says the AK tab is too close to its own and is arguing that it is an infringement of its trademark.
A spokesman for Atomic Kitten said: "We don't know why we got a writ. It [Levi's] says the similarity to the trademark is likely to cause confusion on the part of the public. But we don't think they look the same at all."
The AK range is available in 70 Bhs stores nationwide and Bhs has been supporting the range with substantial in-store promotions and marketing activity, including competitions and a chance to meet the band.
The original deal with Bhs was done by the Licensing Company, manufacturer Thumbprint Enterprises and Bhs.
At launch, Jeremy Saul, head of music licensing at TLC, said: ''Our approach to this deal has been very different to that of a normal licensing deal. We have worked very closely with the retailer Bhs, Thumbprint Enterprises and Atomic Kitten to come up with a range of wearable fashion that the fans will want to wear. The result is an aspirational range of fashion clothing at affordable prices.''
Atomic Kitten are the UK's biggest-selling girl band and have enjoyed success with four number one singles and two albums. The band, whose members are Natasha Hamilton, Liz McClarnon and Jenny Frost, are currently preparing for a nationwide tour in November.
The Kittens unveiled the range at Bhs's flagship Oxford Street store in February. McClarnon, who was recently voted Best Dressed Female in Pop, said that: 'We have asked Bhs to make up all the clothes in adult sizes as the range is so great.'
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