Katie Holmes may have been one of Victoria Beckham's first US celebrity friends after the former Spice Girl moved to Los Angeles last year, but a year later their relationship is "strained".

Mrs Tom Cruise is reportedly annoyed that Mrs David Beckham is now spending most of her time with Kate Beckinsale and Eva Longoria.

"Until recently, the Beckhams were bosom buddies with Katie and her husband Tom Cruise," a source told Star magazine.

"But there is now a clear rift between them, and Victoria has made it clear that Eva and Kate are her new chief allies in Los Angeles.

"Tensions have been brewing ever since Katie took offence to everyone saying that because she's changed her hair, lost weight and started dressing more glamorously, she was morphing into Posh. So she took a step back, and the girls' friendship has cooled off significantly."

Rumours of the split intensified after the 'Dawson's Creek' actress didn’t show up at the pop star's recent 34th birthday event, and earlier Holmes had reportedly snubbed Posh Spice at a recent restaurant run-in.

But the singer's spokesperson has brushed off the speculation: " They all had a drink together, and Tom and Katie and David and Victoria were all out for dinner together last Friday."