I think that using the AVERAGE of the 3 physical attributes vs a 2D6 roll would work well. Anyone who has an Average above 12 should NOT be able to wear normal clothing. Try finding an off-the-rack suit to fit "Andre the Giant" (if he were still alive). Low means small, high means big.
I like the exact = perfect fit, +/- 1 = close enough modification. High Tek Clothes (TL 13+) might be designed with a variable size like 6-8 so the clothes would be an exact fit for size 6,7 or 8 and a close enough fit for size 5 or 9. Then the common sizes could be 3-5, 6-8 and 9-11 with people of size 2- or 12+ needing to shop at a specialty store (The Big and Tall Store carries size 12-14).
Just some ideas for GM IYTU color and 3D6-3 is still a good roll for the size of a specific found item since it allows for the group to find a set of custom-taylored clothes.
I like the exact = perfect fit, +/- 1 = close enough modification. High Tek Clothes (TL 13+) might be designed with a variable size like 6-8 so the clothes would be an exact fit for size 6,7 or 8 and a close enough fit for size 5 or 9. Then the common sizes could be 3-5, 6-8 and 9-11 with people of size 2- or 12+ needing to shop at a specialty store (The Big and Tall Store carries size 12-14).
Just some ideas for GM IYTU color and 3D6-3 is still a good roll for the size of a specific found item since it allows for the group to find a set of custom-taylored clothes.