Though I do not need the extra, extra length, you can count on me to do the market research for the tall girl denim.
Sure, the usual suspect is included below. (Thank you Long Tall Sally for consistently showing up with the longest length denim.)
However, I discovered that an old-school heritage brand carries denim up to the ever-elusive 38 inch inseam in four cuts and several washes in each style. Moreover, this brand is very reasonably priced; the most expensive pair I linked are $69. (Nice.)
Where was this brand when I was in high school?