Potty Patty brings a healthy dose of moral support for your daughter as she arrives at the Big Day when she will leave her diapers behind Underneath her two piece outfit Potty Patty comes wearing a diaper that she will ceremoniously swap for potty training pants at the same time your daughter does Your little girl will change into her Big Kid Potty Training Pants with her Patty there to cheer her on and they can both celebrate the fact that they are now big girls and do not wear diapers any more The additional two doll potty training pants are included because Patty will have accidents on the Big Day and will have to change into her clean potty pants as part of the Potty Training in One Day Process SIZE CHART X-SMALL 19-24 lbs SMALL 24-29 lbs MEDIUM 29-34 lbs LARGE 34-39 lbs X-LARGE 39-44 lbs XX-LARGE 44-49 lbs