What to wear to the Royal Albert Hall

[smaug77]

Going to see Alicia Keys at the Royal Albert Hall. It is a works thing and we have a box. It is also on a Monday night. Having never been to a) a concert and b) the Royal Albert Hall.
What do i wear? Smart or casual?

The Royal Albert Hall can be disgustingly hot, especially if the weather is warm.

So whatever you wear, try and wear layers that can be removed.

Have a lovely time.