So this blog has become a proxy for the girls' baby books. Today I realized that we haven't made note of any of their heights. This is partially due to the fact that we took their growth chart down a few months ago prior to painting the girls rooms and misplaced it shortly thereafter.
We ended up finding it while the built-ins were being constructed upstairs. In any event it's hanging now and I corralled the girls long enough to scratch off a few tick marks.
Isabella is 3' - 6" tall. Sophia is 3' - 1.5" tall. When we next measure I'll note how much they've grown.