Reese Witherspoon, Cameron Diaz & Gwyneth Paltrow Hang Out in London (PHOTOS)

Reese Bikinis in Hawaii
Reese Witherspoon shows off her bikini bod!
Is this the equivalent of a celebrity Super PAC?

Oscar-winning actress Reese Witherspoon met up with friends Gwyneth Paltrow, Cameron Diaz and Stella McCartney at The Arts Club in London Tuesday evening, where they enjoyed some dinner and drinks.

According to reports, the fabulous foursome stayed out until about 12:30AM before slipping out the back exit. Ah, to be a fly on the wall at that dinner!

Reese is in town to promote her new movie, This Means War, in which she unknowingly gets involved with two CIA agents, played by hunks Chris Pine and Tom Hardy. This Means War opens Stateside on Feb. 14.

Check out photos from this famous outing in our gallery now!