Can anyone in the know describe to me the difference in fit between these three styles? As far as I can see they're all skinny jeans but I presume there must be differences? Are some skinnier than others, or are some full-length and some 7/8 length, or in RL do some come up a lot smaller than others? Topshop website isn't terribly informative and unfortunately I need to order online, so I'd rather not have to order 20 pairs to find one that works.
Another complicating factor is that I need them in maternity style. Any recommendations for over bump or under bump, or whether to size up or down? My current Topshop jeans (which are no longer made or I'd be going for those in maternity version to save hassle) are a size 10 but on the small side so if any of the others come up v small I'd need a 12.