Butterfly in the Wind

I have two varieties of Gaura (from the willowherb family - related to fireweed, fucshia and willowherbs) I can't remember which one is which - one has the name "Whirling Butterfly" which describes both one being mainly white and the other being pink and white (I think its the pure white one that is the whirling butterfly variety actually). I haven't had much luck capturing the dainty and butterflylike qualities of it so far.. but today it was cooperating.