DH bought us tickets to see Elton John next week in Sheffield. I've never been to a 'big' concert before and wondered what to wear,one in terms of style and two in terms of comfort. Will it be cold or hot in there? Was thinking of black skinny jeans, knee high boots and a strappy top, but is this too much? Don't want to look as though I've made too much of an effort but don't want to look as if I haven't bothered at all!