So, after being roundly slated on Monday night for my appalling interview wardrobe, I'm here for advice.
Smart casual (the interview panel were wearing scruffy jeans and one had a white aertex, the other a violent green checked shirt.)
I would wear either dark blue jeans or black jeans. I also have black linen trousers (from Next).
I have a jacket that I was advised to put in the bin 
None of my shirts from before DC fit me anymore
Whilst I don't seem to have put too much weight on, I do seem to have changed shape and do need to start to watch what I eat. Relatively non existent in the chest department (b cup)
I have a relatively long body, so most normal shirts are actually a bit too short for me and leave a gap between trousers and bottom of shirt.
I have sweat issues, which are the best colours to hide this, which colours should I avoid? For this reason, I only want cotton shirts.