Hi fellow beanpoles!
I'm 5'11" and I take a 34 leg; not super tall, but it would seem offensively tall for a pregnant woman! Totally concur with the general consensus that shops think only ladies of average height have babies! Here's what I've been doing, if it helps...
New Look online have skinny jeans and bootcut in 2 colours at a 34" inseam. However, every time I've logged on in the last few weeks, they have only had a size 8 in stock. So you can be tall and pregnant at NL, so long as you are a model.
I ended up on ebay; usually I wouldn't really buy second hand gear on , but I figured jeans would be ok. Got a pair of last years Next extra long for 99p; they arrived today and are fantastic. However, upon logging on to the next site, nothing longer than a long, which might do in a pinch, I suppose...
I'm a costume design teacher so I have taken a pair of topshop jeans which I loved anyway, put them on, cut away anything that didn't fit below my bump in a sort of moon shape, and then stitched a panel of strong jersey doubled over to fit my bump exactly. The jersey cost about three pounds. I'm pretty happy with them. Have also put side panels into a pair of smart work trousers. Any half decent local seamstress should be able to do this for you, for a few quid. I figure I am probably going to need new clothes once bump is here anyway, if my hips widen or my shape changes, so no matter if I lose a couple of things to elasticated waistbands! I've got a funny sort of shape anyway and I'm used to letting hems down, taking waists in etc, but like I say, any local sewing shop, decent dry cleaners or seamstress should be able to do lots of alterations for you to make stuff fit better over a bump. I'm now eyeing up my wardrobe wondering if any of my favourite tops could take an empire waist or a couple of panels down the side... Hmm....
Good luck! Has anyone tried the catalogs, marisota etc? They definitely do a great range of sizes usually, but I have no idea if they do a mat range?