At 4 months and 9 days old, Aya can now sit up by herself. No, she can't get into that position by herself of course. And she doesn't last more than about 3 or 4 minutes before toppling over. But she CAN do it and seems to almost prefer it to laying down. One month earlier than Noah did it, two months earlier than Gracie did it. She's just moving right along, knocking these milestones out one by one. I am afraid it's all going a little too fast for my liking...with a tooth or two up next on her "to do" list (based on the amount of drooling and crying we've experienced this weekend alone!).