am also an hourglass: 37-27-37, and am 5 7 tall. I like bodycon: it works, for me! Pencil skirts, ace! But you can't always wear 'sexy' frocks, can you? bah...
jeans can be a nightmare until I discovered high waisted jeans! I will never ever buy a pair of 'normal' jeans again! I hated jeans: always too low cut, made me look fat, overspill, all that (and I'm hardly fat, am I?), but then, high waisted jeans came into my life... thank you, fashion gods!
I buy mine from 'Very', own brand, usually around £30 a pair. They do flared/bootcut (which I never buy) skinny, (which I live in) and a straight leg (which is nice with trainers).
with regards to trousers: mega issues there, too. my legs are 31, conventional pants are too short at 29-30 ins, and the waist? ew, no. gaping, too low, hip/waist ratio all wrong on my body
until I discovered... tall trousers! seriously girls, try it! I'm only five seven, so I'm not tall, but, that tall proportion, works better with an hourglass body, and I no longer have to always wear ankle boots because my trousers are too short, and I no longer have to worry about getting tops in just that right length: I just chuck on a crew neck t shirt and bingo, am dressed, and I look pulled together!
same with shorts. love shorts, have good legs too, and I see them on other people and think they look great, but I put them on, and I look like a fat, oddly proportioned child until I discovered, tall shorts. haha. that extra few inches makes a massive difference.
seriously, try the tall pants and the high waisted jeans thing: see if it works for you: if it does: report back!!