On to Baby member Sweet Poppy Studios sent us these adorable six-month-old baby photos of little Mason in Redwood Shores, CA. Carleigh has been photographing this cutie at every 3 month interval. In this shoot, she's captured his adorable, inquisitive and serious personality so beautifully. Mason also got to show off his brand new skill of sitting up all by himself. The session ended with some shots outside under a willow tree, as with all of his sessions. The tree changes with the season, and so does Mason! Such a great idea. To see more of this cutie pie, stop by the full gallery.