Posh and Katie act is wearing thin for Tom Cruise

Victoria Beckham's new best friends may be Hollywood's biggest stars – but Tom Cruise is concerned that the Spice Girl is rubbing off on his wife just a bit too much.

According to my spies in LA, the actor is keen to put some distance between his actress wife Katie Holmes and Victoria, who have morphed into each other.

Tom Cruise is apparently keen to put some distance between his wife Katie Holmes and Victoria Beckham

Katie sees Victoria as a role model," says my mole. "She copies Victoria's look and even cut her hair the same way.

But it concerns Tom that Katie has lost so much weight recently.

Tom and Katie threw a welcoming party for the Beckhams when they first arrived in Los Angeles

She is very thin largely because she is following Victoria's strict 900-calories-a-day eating plan. She is copying Victoria's fad of eating seaweed shakes, frozen grapes and edamame beans. She is tiny."

It sounds to me like both girls are in need of a proper slap-up meal.