Does anyone know of a brand of clothing that is good for skinny kids? My (nearly) 4 year old is of just over average height but has very slim hips / legs and so all her trousers /leggings / skirts fall off her even with the help of a belt. She fits 2 -3 year old trousers, waist wise but then they are all too short in the length. Help - we are all sick of seeing her 'builders bum'!