My dress does ride up sometimes - but just a little, every so often, and nothing that drives me crazy. I think there are a few reasons it doesn't ride up much:
1) The knit is a blend. Not sure what it is, but it's not cashmere. I suspect cashmere clings like crazy (I'll find out when my new sweater dress arrives!!!).
2) The knit of the dress is fairly heavy, so the weight holds it down and keeps it in place. Cashmere is lighter so there's nothing to hold it down, does that make sense? And I have that one tunic that does ride up a fair amount ... it's not cashmere but it is a lightweight knit.
2) I wear a full-length 100% silk slip under it. It's actually a Victoria's Secret negligee, but it's nearly as long as the dress. It may be the 100% silk that makes the difference - a synthetic slip is going to cling a lot more, I think. Also having it nearly the same length helps too. (The negilgee I have has a pretty black lace edging, so if a bit of it peaks out, who cares).
3) As Ana says, that sweater dress (and the new one coming any day now) falls from the waist. It's got a seam at the waist, and few pleats. It's not form-fitting but roomy.
I'll let you know if the new dress clings a lot - it might. I did notice when I tried on the larger size, and a bunch of other Aqua cashmere dresses, that they all had a tendency to cling a lot, even over jeans. I suspect it's the lightweight cashmere that's the culprit. I'm hoping my VS silk negilgee will be enough to combat this.
You can also rub Bounce sheets over your tights to control cling - safer for the environment than using the aerosole spray stuff.
