DH's work organised a Christmas party but said no partners were allowed. This prompted a rebel uprising and now they are organising their own do so partners can attend. This means I can't back out as DH will be 'lonely' 
I have an issue with eating in front of people I don't know well and especially struggle at buffets- so obviously this night out is at a Chinese buffet restaurant...
What on earth do I wear? It feels like casual will be too casual, and dressy will be too dressy... I'm rubbish at 'in the middle' dressing, help!
Also, I really want to look nice, as all of the other partner's will be there, and I don't want to be remembered as the ugly, fat one
Help me strike the right balance, please?