Growing up my sister was my best friend and worst enemy. It is a bond that all little girls deserve. It is so heartwarming to see my daughter love her little sister. It reminds me of the times I played with, got in trouble, and fought with my sister. Those memories are ones to be cherished forever and being able to see my own children make those memories is priceless. Love your daughters, not because John Mayer told us to, but because they truly are precious beings.