Victoria Beckham and Katie Holmes’ have never best friends claims a new report, with the pair often falling out over Posh’s eating habits, lifestyle choices and sarcastic remarks.

According to the Mail On Sunday, the wives of Hollywood superstar Tom Cruise and soccer ace David Beckham are keen to keep up appearances for the media, whereas in actual fact they are far from being close pals.

A source tells the paper a lot of their differences arise from different interests: "In many ways Victoria is very un-Hollywood. She hates working out and has yet to go to a gym in Los Angeles. She lives on a strict diet, treating herself to frozen grapes to keep her going during the day.

"Then in the evening, she will work her way through several chilled glasses of white wine. Both Tom and Katie think it's very unhealthy. Neither of them are big drinkers, no one is in Hollywood.”

In addition to the lifestyle differences, Katie does not appreciate Posh’s dry and often sarcastic wit. "They have offended each other over different things," the source says. "At a Welcome to LA party that the Cruises threw for the Beckhams, Tom was dancing like a crazy man, sweating and really going for it.

"Victoria made a joke about his lack of co-ordination on the dance floor, but it bombed with Katie.

Mrs Cruise also doesn’t appreciate the fashion icon telling her what is in vogue. "Victoria suggested to Katie that she should go and get herself a tattoo. Victoria considers hers to be miniature works of art, but Katie said she thought they were tacky. They didn't speak for a while after that."

The final straw for Katie’s animosity is the Beckham’s reluctance to join Scientology. "Katie and Tom want to surround themselves with fellow Scientologists these days, and they are distancing themselves from anyone who is not a believer,” explains the source.

"For Tom, a non-believer like Victoria is very dangerous. She is opinionated, strong-minded, privately very against Scientology and has voiced her doubts."

Can Katie and Victoria keep up pretences for much longer? Be sure to leave your thoughts below.