Last Sunday was the hottest of a run of hot days in London. It was also the day the England football team lost to Germany in a 4-1 thriller in the second round of the World Cup, Kevin Pietersen’s 30th birthday, and the third and final day of Hard Rock Calling, the misleadingly-named music festival which this year featured, among other hard rockers, Stevie Wonder, James Morrison, Crowded House, Elvis Costello and Crosby, Stills and Nash.
But it was the promise of Paul McCartney which had me eagerly pressing the “refresh” button on my browser the morning tickets went on sale. I tried to get tickets to see him at the Dome back in December, but the good seats were insanely expensive and anyway, it sold out before I could buy any. Day tickets to Hard Rock Calling are £60 and you get to sit anywhere you like and see lots of other acts, so this was a much better choice.
Well, it was great and the photos are here, but in the long minutes between acts I found myself fascinated by what people choose to wear when it’s hot and they’re going to be outside all day, because if you live in or near London (or any British city), neither of those things is very often true. It’s hot today, but I am spending eight hours of it inside an air-conditioned office, so I am wearing a dress with sleeves. On Sunday, we were all exposed to bright sun and 30C temperatures for about the same amount of time. In those circumstances, deciding what to wear can be quite tricky. So I inspected the choices of some of my fellow revellers, and have come up with some guidelines, which I now present to you for free, with nothing in mind but your welfare and happiness:
1. As in so many areas of life, I agree with Baz Luhrmann. Rule number one is wear sunscreen.
2. With no shade and barely a cloud in the sky, hats are the order of the day:

3. Be careful with straps. Straps are good, but ill-fitting or competing straps are bad. However, if you have no choice but to show off your bra straps, do it with chutzpah, so it looks like you meant it:

4. It’s better to wear too many clothes than too few. You recover faster from being hot than you do from being burnt (I have tried both, so I can say this with certainty). And if you wear light, loose clothes you probably won’t be much hotter than you would have been in a bikini. I liked this outfit very much:

5. Do not, under any circumstances, wear a bikini. Bikinis are strictly for the beach.
I should come clean at this point and tell you that I was wearing a jumpsuit.
In many ways they are ideal hot-weather outdoor wear: they are durable, you can sit cross-legged without risking your modesty, and they keep all the ungainly bits covered while allowing arms and legs unfettered access to the air. However, they can be tricky to go to the toilet in. I think the answer to this is to wear a baggy-ish one with no complicated fastenings, and to stay on the fuzzy side of sober. You’ll be pleased to know that I more or less managed both.
However, based on extensive research I have decided that the IDEAL festival-going hot-weather outfit is a strapless top, elasticated shorts, a hat, sunglasses, sunscreen and a wrap which you can sit on when your legs get tired and put around your shoulders after the sun goes down.
Shoes are more problematic: you need something sturdy and comfortable which you won’t get sweaty in. I wore Crocs, but I am the only person I know who looks good in Crocs, and the only reason I think I look good in them is that I never on any account look at them once they’re on. I just revel in the squish of the tread and the swish of the air as it cools my toes. The real answer is probably flip-flops on soft grass and light plimsolls on rough grass. But I will leave that to your discretion.
Sorry for only talking about girls’ clothes. I have no advice for boys, although the hat and sunscreen rules are unisex. If you are a boy, I suggest you dress like this:

I have left the most important rule, not including the sunscreen one, until last. The most important rule, not including the sunscreen one, is:
6. Wear whatever you like. It’s a festival! Go wild.