My baby girl graduating last spring. The first one she was standing in the sun. The second one She was so happy and my sister said something funny and she laughed so hard I had to snap the shot.
Congrats to your youngest daughter. She looks so pretty. Graduations are so much more celebrated over there!
I really, really, REALLY like the second photo in which you caught her laughing and unaware of her photo being taken. Very natural. Very nice. Her laugh is catching.