we got a Chicco Shuttle Car Seat for my dd when she was 6 months old, she is now nearly 14 months old and can get out of the car seat. i am extremly worried about this obviously because its not safe. we have tightened the harness on the car seat as tight as it will go against dd and she still manages to get out of it. she gets one arm out then the next then turns around in the seat and stands up waving out the back window with the harness still clip in. any advice on what i can do please. shes done this 4/5 times now. thanks for any advice.