06/10/2011 08:06 BST | Updated 22/05/2015 06:12 BST

Cameron Diaz And Gwyneth Paltrow Party With Prince Philip In Mayfair

Here's a sentence we never thought we'd write. Cameron Diaz hit London's Mayfair last night (their arrival was enough to cause a stir in itself) with none other than Prince Philip in tow.

cameron-diaz-prince-philip-cameron-diaz Cameron Diaz, Prince Philip and Gwyneth Paltrow open The Arts Club in Mayfair. Photo: Dave M. Bennett/Getty Images

So what brought this unlikely threesome together? Paltrow and Diaz (dressed in matching LBDs) were invited to celebrate the opening of The Arts Club at a launch party hosted by The Duke of Edinburgh. Judging by Cameron's empty glass and Gwyneth's big smile, it looks like the ladies had a blast. HRH, however, looked slightly confused by the whole affair... star struck perhaps?

Later on in the evening, Gwyneth took to the stage with Mark Ronson. Well, it wouldn't be a party without a bit of a sing song.

Let us know how you rate the ladies' looks and take a look below to see all the fun from last night's launch party. If only we had been invited...

gwyneth-paltrow Paltrow takes to the stage. Photo: Dave M. Bennett/Getty Images

Shop Gwyneth and Cameron's LBD style below: