She wearing (European) Pampers Baby Dry size 6. The tapes of this diaper are really stretchy, so without extension they will fit on a smaller adult. In other sets where Faye is wearing adult diapers, she is wearing the S Size. For example the S(mall) size of Tena Slip is for a hip size of 65 - 85 cm and the Abena Abri-Form Small is for a hip size of 60-80 cm.