'Just a work skirt' (not)...

So my darling daughter asks if I could whip her up a new skirt for work. Her request was for a skirt, just above knee length, in black. Nothing fancy – ‘it’s just for work’ she informs me. Naturally I jump at the chance - a valid excuse to sew!!! Within 5 minutes I am holed up in my sewing room rummaging through the pattern stash. Finally found a pattern I had been meaning to try myself. Simplicity 2451 – 2 skirts in 2 lengths. Great excuse now to give it a go. Within the hour I had flown down to the local fabric store to grab the required fabric and bits and pieces needed. Already I am picturing my (OK her) skirt completed, with button detail and a trendy exposed zipper at the back. First thing was to lengthen the skirt pattern and for this I added on an extra 12cm throughout the bottom section of the skirt. My daughter is 188cm tall so has never really been able to pop into a shop and pick up a massed produced skirt at a suitable length. So this skirt will be at the exact length s...