
I couldn't bear shopping when I was pregnant, so I picked up a pair of black Moto jeans from Topshop and was done with it. It's true what they say about Topshop maternity jeans: they don't stay up - so you're forever hoisting them. On the plus side, though, they were comfy, fairly smart and under £40. This, I think, is what a lot of women end up doing. I asked Beth Graham, an independent fashion designer whose style I admire, and who has recently had a child, what she did about maternity jeans. I was expecting some obscure denim tip off but, no, Graham got a few pairs of Topshop jeans (and some of their chinos which she says earned quite a few compliments). "The jeans did fall down," agrees Graham, "but they were a good price and had some good styles."
I'd say so.  I just loaded up on a bunch at the outlet in Vegas and normally wear size 6-8 depending on the brand, and most of the size small fits me fine.  They carry some different jean brands though, and sometimes I'm a medium in those, but that's normal for jeans to fit weird like they do when we're not pregnant!  Don't even escape that when looking for mat clothes!
During my first trimester, I thought I might get away with continuing to wear my low-slung hipster jeans for the duration. And I probably could have eeked them out for way longer than I did, had I invested in button extenders or a Bump Bandeau (as recommended by JTryner in an earlier thread). But there was always going to come a point when I got a little larger all over (be it from swelling, fat or, y'know, the extra 2 ½ pints of blood that swishes around in women when they're growing a foetus).
If you've ever been pregnant, you know that maternity jeans can be a real saviour for your wardrobe. As your waistline expands, everything starts to not fit quite so well (sob!), and it can get uncomfortable—not to mention expensive. But if you have some decent denim options at your disposal, you can at least wear some of your looser tops over your bump. And there are some brilliant jeans that can help with that.