She is 3 years, 10 months, today. I weighed her this morning in shoes, and she was 40.0. :-( So I flipped her Radian XT, and she liked the novelty, of course. So sad, I was hoping to keep her RFing to 4, but the $300 for a new XTSL is just more than we have. I know she's safe at this age, in a properly installed seat, but it still makes me just a tad nervous.