So apparently there was some kind of party going on in London yesterday morning. First of all, what sort of time is that for a party? And more to the point, where was our invite? Anyway, whoever was hosting it seems to be Mr. Popular because they had an impressive amount of famous friends amongst their invitees. And because we're so good to you here at HM, we've sifted through thousands of pictures of women in hats to bring you the best and worst efforts. But mainly the worst, obviously.

How about we start with the best and get all that dirty positiveness out the way, eh?

1. The Middleton Sisters

That'll do. Now for a more enjoyable dose of ridicule and disapproval...

First of all, the worst offender: Princess Beatrice. We don't know what colour that is, but salmon and beige are both eyesores so a combination of the two was never going to be a good look. And don't even get us started on that thing on your head. That must be the fashion police in front of you etc etc.

Beatrice wasn't alone on the dodgy hat front yesterday, though. Her sister Eugenie brought a furry animal along on top of hers and Tara Palmer Tomkinson looked like she had an Avatar's labia on her head. They should have taken a note out of Sam Cam's book and just not worn a hat at all. Anarchist.

Elsewhere, Princess Anne went a bit far on the floral front, Zara Phillips came dressed as the Demon Headmaster (refresh your memory here) and Chelsy Davy ditched her Primark shellsuit for the day.

And the awkward look on the Queen's face says it all here: "Shit, we're clashing!"