Hey ladies!!
I an well under 5' and have all the same problems!
What Katie Did are excellent - look for the styles that are designed for girls starting under 5' and also - as has been said - for 'french style' or french fit' which are shorter in length so are better for petite lasses!
I love Agent Provocateur for lingerie - and i know they are heart-stoppingly expensive - but the joy is that garments can be repaired and altered for free through their boutiques! This means being able to have garter/suspender belts and/or roll-ons adjusted to have shorter stocking snaps - a god-send
You could maybe find somewhere with a seamstress service to see if the same could be done for yours? Some dry-cleaners might be able to help, or a tailoring shop?
I have only bought stockings from M&S once - they went through at the toes on both stockings the first time i wore them and would not take a second chance. I wore them the day after purchase and returned them the day after that!
The same thing happened this week with a Pretty Polly pair from Boots - exactly the same scenario, so back they went! Was very pleased to get refunds both times.
From now on it will only be what katie did and agent provocateur for me, unless i can track down the elusive 'extra small' size Wolfords proclaim to do on the back of packets, but i've never actually seen them in shops...