>>7264283>>7264270>>7268434In the first Touhou Manzai with Yukari and Reimu, Yukari announces Reimu's height and weight. 140cm (4'5" with change) and 35kg which is around 77lb. Assuming the girls in Touhou are all depicted around the same age, it's also safe to assume Momiji's statistics wouldn't be too far from these measurements.