7 for all mankind high rise (they are actually mid rise), citizens of humanity, IDA for actual high rise, and james jeans - the hunter cut.  I'm 25-35 and size 27 fits like a dream in all of these brands. Esspecially the 7 for all mankind and and citizens of humanity (the citizens are my personal holy grail, they are the same designer as 7 but branched off). I have heard hourglass recommendations also for joe's jeans, but I've never tried them. Opt for straight leg or boot cuts. Avoid low rises because your big hips and large ass will automatically lower the rise anyway. Enjoy designer prices for designer quality, because that's the only  brands who will cater to us anymore. On the upside, these are also shitlording brands that fats can't wear, they're classy and premium denim, they will be the best jeans you've ever had, and amazon usually has some of them at half off. Use somewhere with free returns to get your perfect fit ;-)  Edit: A lot of these come long, they are meant to be custom hemmed to you, so add like £10/$15 for taking them for hemming. It's worth it, I promise.