Ok...let me wipe the tears away..
You guys are so AWESOME! Thank you so much for the compliments on my girls. The uniqueness is one of the things I LOVE about my family. 
My girls are so different yet so similar. If that makes sense. They get a long very well, yet have such different personalities. My 2nd Oldest (the top right with long blond hair) is my Tom Boy...We've always jokes she was the boy of the family. Yet at the same time she can be so girly. Our oldest actually has pretty dark hair, but we heard so many lame comments including "so which one of them doesn't belong"...or friends (yep..sadly even friends) would sing the Sesame Street Song.. "One of these things doesn't belong, can you tell which one." One day Alyssa said she wanted to be blond like her sisters. A friend of ours comes to our house to do all of our hair, and she said she could do some blond highlights...that's what we did, and she has been very happy ever since. As for Sierra..she's our darkest beauty. I love her dark hair and love that Aly now has a little sis with darker hair. Sierra is spunky and the hair just goes with the personality. SMommy...all my girls hair turned blond by their first year, so I don't think hers will. 
Thank you again, I'm blown away by the Gorgeous children that I see here everyday. We are all such LUCKY mommies. 