I am going to my friends wedding in a month, and I have no idea what to wear- the last time I went to a wedding I was about 10! I am 23 now, and don't know how formally it is acceptable to dress. I found a lovely black dress in Wallis today that is not online, but is strapless, empire line and floaty to just below the knee. It was gorgeous, but is it ok to wear black to a wedding? Or, going more casual, I tried this cgi.ebay.co.uk/Brand-new-TOPSHOP-belted-corset-lemon-size-10-rrp-28_W0QQitemZ330124394266QQihZ014QQcategoryZ314QQrdZ1QQcmdZViewItem on today and it was lovely. Would it look ok with a white knee length skirt? or is that too casual? I am a size 12, if that makes a difference.