Loving the mint plant

Thanks to the Gardens with Wings group on Facebook, I now know this is a Pearl Crescent.  If you look really close, there are crescent shapes on the base of the lower wing.  It  is only about an inch long.  So small yet so brilliant.  It was on my mint plant and you can see it's not much bigger than the leaf.  
There are two little lilac butterflies out there right now, but I haven't captured a good photo yet.