Apparently Russia crowned Anastasia Strashevskaya "Miss Longest Legs" earlier this month; she has 42" legs. (Alas, I have not been able to find her total height.) That was followed by Alexandra Robertson in England, 6'1" with 47-inch legs, and now Ms. Banker.
I would think that legginess involves proportion as well as length, so that Ms. Banker (0.662 leg length/height ratio) outdoes Ms. Robertson (0.644). My goodness--being two-thirds leg by height! Could Ms. Banker create a similarly-proportioned Second Life avatar?
Actually, I think she could. I will have to make a point of figuring out my avatar's leg length/height ratio. I do like to twist the knob to 11, and the avatar stretching animations do most of their stretching on the legs. How far can one go?
UPDATE: Svetlana Pankratova still holds the record, 6'5" tall with 4'4" legs, and thus a leg length/height ratio of 0.675.