Famous people are always getting them free stuff and promoting things in return for more free stuff or money, or an enormous sense of self-satisfaction, but probably not the last one. They need to pick what they advertise wisely, otherwise they end up a laughing stock and people mercilessly take the piss. And so, Pictures of the Day has a few celebrities promoting things for different reasons, mostly money...

Look! It's another festival! We've not had one of these for a while. Actually, that's a lie - there seems to be one going on every day this summer. If there's a free field going, let's plonk some popstars in it and hand them a microphone. It was day one of Wireless Festival in Hyde Park on Friday and as much as we'd rather they didn't hand the Black Eyed Peas a microphone, that's exactly what they did. Along with Tinie Tempah and Alexis Jordan. Yeah, her.