Most of my group rides start at 8 am, so that means that the temps will be rising by 25 or 30 degrees F while we're out. Some kind of "warmers" are a necessity.

I have a set of knit wool PI arm warmers and another set of light fleece lined Lycra ones.

I have Adidas knee warmers, but I really don't like them. They're too tight around the calves, cut off my circulation and give me cramps. I'm inclined to get a pair of full-length leg warmers.

+1 on compression garments being flattering! Those knee warmer lines definitely aren't... but you deal with it, it's better than cold stiff leg muscles.