Hi there,
I've just bought a new suit - this time with a waistcoat, and I've just started to try and fit my topic (David Penn's 21st Century Topit) - and I've realised that with this design (I'm not sure if others are the same as I've only ever used this one) - you have to pin the open side to the waistband area of your trousers. However, if I'm wearing a waistcoat I can't really do this.
Any suggestions for making it keep open? (apart from the obvious of 'don't wear your waistcoat')

Cheers,