Gnomer, there's loads of unisex stuff online, just get bright, fun colours. I'm not kee on pink either and if it's a girl she's going to be wearing some things that are labelled 'boy' just because they're not pink. I found a cute outfit which is green with thin yellow stripes with a bright yellow lion on, I'd get that for a girl even though it was in the boy section.
I don't have any comedy stuff yet but my friend has bought me a banana outfit and I'm planning to get a 'Bazinga' vest.