I'm going as Arthur Dent for my first costumed GenCon! I've got this robe, two old shirts (one white, one blue), and this towel (not accurate, but as close as I could get on relatively short notice).
The part I"m having trouble with is the striped pajama pants. I've tried googling all different combinations of red striped pajama pants, fabrics, and even went so far as to look for pirate costumes that might work out and I'm not having any luck.
They appear to be red/burgundy or red/black, and I have no idea whether they were purchased or made for the film.
Here is an image of the Arthur Dent action figure for reference:
Thanks for any help you can provide!