Katy Perry once bought me dinner. We happened to be in the same place as her by sheer coincidence while my sister was wearing her merch and she just came up to us, had a chat then told us she was settling our bill and wouldn't take no for an answer.
Even at the height of her fame, she used to give her old fan forum a number of free meet and greets for every tour date while other artists charged thousands. I know not everyone is a fan of hers but I've always found her to have a good heart.
But if that's not bitchy enough gossip, I've heard Charlie from Busted (allegedly) tried to steal a bottle of Jager from a club in Edinburgh after playing a gig there, according to someone who used to work there. That's how we all knew he'd be joining McBusted - because he used go on about how he'd rather go broke than rejoin the band