What should I wear to a concert at O2

[Corriewatcher]

DH has just told me he's got tickets for the Black Eyed Peas at the O2 tomorrow night. I'm really excited though haven't a clue what to wear. Let's just say that I don't get out much! And the last time I went to a concert was over 15 years ago. A slightly complicating factor is that, afterwards, we will have a bit of a hike across London and then by train out to our house in the sticks, and I don't like being cold.
Any advice gratefully received. BTW I'm 43, and there will be dh's work friends there so don't want to look too out of place. Thanks!

I generally wear jeans with a nice top and a jacket. Can get quite warm in there when everyone gets going! But is cold once you get outside. Best tip I can offer is to find out the end time (sometimes on O2 website, if not just buzz the info line, then, a few mins before the end get up and just wait near the exit - that way you'll be one of the first on a train!) Have fun! Bet it will be great.

Thanks, Claire!

Wear jeans/boots/top with a bit of sparkle or design/jacket and pashmina to keep warm. Am unspeakably jealous...but have a lovely time