For me it was:
Compression base layer
Team top
Gillet
Arm-warmers
Lyrca bib shorts
leg warmers
Woolie Boolie socks
Summer shoes – at least they let the water out!
Windproof gloves
I went for the wet and warm approach rather than trying to stay dry. Also a good coating of warm up oil on my legs before the start.
I left a waterproof in the pits just in case I started to get cold.
Temperature wise I was fine during the race, it was only when I got home and was washing the bikes that I started shivering a bit. The drive home was too short to really warm up in the car.