I'm kinda the same when seeing my extended family because we only see them once a year and their right gossips so you know their talking about you once you've left. Choosing the outfit is a right nightmare and their all trendy londeners. I'm just waiting till next christmas at our next visit for me to be a lot lighter, give them something good to say about me behind my back.
And yeh guys only ever notice bad things, nice new hair, gorgeous new cloths they won't have a clue.
Let the comments make you want to loose the weight and get the compliments it deserves.