Victoria Beckham's is reportedly fed up with Katie Holmes stealing her style.

The former Spice Girl and self-proclaimed style icon is said to believe her Hollywood pal has upstaged her by 'ripping off' her signature 'Pob' hairstyle.

“When she arrived in LA Posh felt she was the equal to any star," an insider tells the Daily Star.

"But with the failure of the Spice Girls reunion and David’s faltering career, she is terrified everyone’s losing interest in brand Beckham.”

The source adds, “The one thing she thought she had over Katie and other leading lights was her sense of style.

"But now that Katie’s usurping her, she doesn’t know how they can continue to be friends.”