What To Wear To A Winter Jam Concert What Should I Wear To This Concert?

What should I wear to this concert? - what to wear to a winter jam concert

I'm going to Winter Jam, a concert and a Christian, a man who truly loves and that I love, but it did not leave us ... I do not know what they wear, and I'm really trying not to impress, but I want to something other than the T-shirt and jeans usually wear ... This is the first time I've seen since June, we saw only 5 other every day of the year, will then be seen until June next year ... Please give me some advice ...
Thanks