I'm reasonably tall (5'9), with my height in my body rather than my legs. I've several smart casual tops I wear to work which were fine in the summer, but as soon as I wear a cardigan with them, they're too short and I'm constantly pulling them down. I used to buy all my basic everyday T-shirts from next, but now they've changed their sizing and nothing fits any more!
I'm not sure I want to go for the tunic and jeans look, as I'm not sure that goes with bootcut trousers. I just want something long enough I don't have a gap between my trousers every time I move or reach for something!