Been invited to a 40th party by Dh's friends. It's an afternoon into evening affair and involves lots of people he hasn't seen for years and I've never met. Our 2 dc (2&3yrs) are also invited. What on earth can I wear that will be smart but practical? I tend to live in jeans and hoodies at weekends. I'm a generous 12 and early 40s. All help would be most grateful received!