Arghhh-skinny jeans for slim legs!?

[letseatgrandma]

I am a 12-14 (which is probably the problem!). I think my bottom is a 14 but my legs are a 12! I have so many pairs of skinny jeans and none of them fit properly-they are either too big from the knee down or seem to fit ok and then within an hour go hugely baggy around the knees. I have tried

Primark-not bad, but the waist bags after a while and they need hoiking up all the time
Top Shop Baxters-look good in the shop and aren't too low waisted, but have baggy knees within the hour
New look-not v skinny
Gap premium super skinny-the best so far, but are only good straight from the washing machine for a few hours
M+S jeggings-ok, but not tight round the knees like I want
Zara (my latest ones-£20 from Ebay and they are more of a slim fit than skinny-grrr)

Where else to try!?

Ooh-interesting CMAHAH! Not that I now need any more pairs of skinny jeans!

What's the sizing like-is it pretty true to size? I am coming to realise that whereas I might buy a size 14 skirt for comfort, I really need a 12 in jeans to get them to fit properly around the legs!

I have trouble with jeans. I have long skinny legs and find jeggings too clingy. I bought some skinny jeans from White Stuff and they fit a treat. Narrow a d good quality denim. The waist isn't too low either so they fit nicely across the bum. £45.