Kimberly-Clark also makes one similar to the Tyvek suit but it's a paper-based material.
 
paint outfit

Virtually every paint supply store sells a pair of thin, white, plastic coveralls (arms and legs) with a big zipper in the front for less than $10. When it gets ratty, toss it. I usually tie a rope around the waist where I hook my forced air respirator hose clip.

The suit has elastic legs and arms. Gets kinda warm depending up when you paint.

For my ever-enlarging bald spot, I wear a cap.

Also, Devilbiss is having a good sale on their Finishmaster III gun with three tips. I just used it to paint a classic 65 Comet Caliente convertible and it's FAR superior to my SHARPE.