Sony Music bosses are fighting legal action from underwear manufacturer Triumph amid accusations Beyonce’s lingerie in her Video Phone promo is a direct copy of one of their designs.

The R&B superstar dons a black and white two-piece in one scene in the music video, which also features Lady Gaga, complete with matching bracelets and sunglasses.

Triumph executives took issue with the outfit, alleging it bared striking similarities to their creation by Bulgarian designer Iskren Lozanov, and filed suit against Sony for copyright infringement earlier this year.

Lawyers for Sony argued Beyonce’s underwear had been inspired by Spanish artist Pablo Picasso, but a judge recently dismissed their claim, ruling in Triumph’s favor because Lozanov’s design was so unique.

Bosses at the record label have consulted with the Halo hit-maker and are now preparing to file legal papers to appeal the decision.