Well, whaddaya know, the rumours were true.
Here's a fellah tacking up a a "PRIVATE FUNCTION" sign, here's a fellah from Hugo's delivering the sweet marshmallow riddled sides, and here are some bemused if a little thrilled people quietly supping pints in the smoking section. She even was kind enough to sign autographs.
Kicking yourself that you didn't head down yourself? No to worry, you can enjoy the rest of the photos here.
If you're going to see Rihanna tonight in the O2, enjoy, and if you see our photographer there, be sure to say hello - he could be posting a picture of you in Caught Out...