Sitting Up!

Last night we came into our bedroom (yes, my little man is STILL in my room with me!!) and found Tristan SITTING UP and PLAYING when he's supposed to be S L E E P I N G!  His new thing is sitting up on his own from a lying down position.  I STILL haven't seen him do it, I only find him afterwards! I can't believe how big he's getting - it's the little things that get momma's so excited!!