victoriaanna460resize.jpgPatrick Demarchelier

Victoria Beckham and Anna Wintour are two of the best things to come out of Britain ... and they're ready to let the world know about it!

The two fashionistas are joining some of fashion's biggest names for the "GREAT" Britain campaign ... a new program promoting "the best of all things British around the world. That's not cocky, right?

We're loving this group photo from Vogue. Click thru to see the full picture shot by famed photographer Patrick Demarchelier.