Dress Up Party Ideas Please?

I have a dress up party coming up this weekend and it is 'music' themed, where we dress up as a singer, or band or something close to that. If you could help me, I can't get a wig and dont have to much fiddle-y time. I would also not like to pay that much. I have dark brown hair, but could pull of black to about just lower than shoulder length. I could straighten it or keep it curly, I am also fair skinned. I cant go as Lady Gaga, anyone from Kiss, beyonce or rihanna. Everyone going is 14 years old, so nothing weird and we should know who it is, If you can help me i will appreciate it very much. Thnaks in adavance :)