I've been looking for a series of clothepins over a period of time, intending them to get a good grip, without squeezing the [...] out of the lady wearing them..
The solution was these 'soft grip' clothepins
They have rubber padding, where they grip onto her, which give a secure grip, without being too fierce..*G*
They look like this, applied: 
The model had these laying around, which are made as 'bag-closer's..: 