When I had looked more closely at it, I realised that it had the same problem that I have with most pencil skirts, but slightly more so. As most fabrics have a little give in them, they stretch over your hips a bit, which if you like a snug fitted pencil skirt is ideal. However, if they are lined, the lining does not have this give, and the lining is also usually slightly smaller than the outer skirt. Every skirt I own with a lining now has a rip down the side of the lining. Which makes the lining useless as the non lined bit catches. therefore, as I am not one of those young ladies who is horrified/bemused at the need for slips (we did a poll at work, it was weird how many girls didn't own one, I am not sure how they manage..) I just rip out the linings and wear a slip underneath instead. Clearly a potential problem with the pink skirt was that the lining was too small, so I took it out, which was really easy as it was just stitched onto the inner flap of the waistband.
bye bye lining
I then cut off the bottom (really easy again as it is a straight skirt) and rehemmed.
And it now fits extremely well, and I just wore a slip under it.