Of course Terrapin Wetsuits would love to make you a custom suit, but, there is a very viable option to custom tailor an off-the-rack suit, too. Other "custom" manufacturers won't do that for you.
Here's my collection of information from altering many different brands for folks around the country. While Hyperstretch, Aquaflex, and other copyrighted names for super-stretchy wetsuit material do allow the material to stretch around the larger areas of the body, you need to remember the downsides to this material:
1) In order to stretch more in either length or width, the neoprene gives up thickness. Most of the ladies I speak with say they get the coldest in their upper torso, so thinner neoprene around the chest and upper back is a poor solution.
2) Very soft neoprene will compress more at depth, so a very strechy, soft suit that's 3 mm on the surface may be as thin as 1 mm at 90 ft.
3) Repeatedly over-stretching will cause the material to break down faster, and stay compressed. Without intact "closed cell" air bubbles in the neoprene, it radiates your body heat more quickly, and you're no longer insulated.
4) A suit that start out at 1 mm is very stretchy, but the thinner the neoprene, the more of the "closed cells" are cut when the neoprene is sliced, so the more permiable the layer, and less effective its insulation ability.
In short, it's better to get the right thickness for your insulating needs AND a suit to fit you correctly without over-stretching.
One last thing about the list above, it's Terrapin Wetsuits, not Otter, that make the cool minihoods with ears, horns, fins, etc...
