to the OP, i will help you out since everyone else here is giving you a half assed answers and i don't want you to waste $100+ on a pair of jeans you might not like.
contextclothing.com (for apcs) and selfedge (for other jeans) both have sizing charts for all of thier jeans, compare the stats (waist, rise, thigh, knee, hem) and get the jeans that fit the way you want. just keep in mind most jeans are vanity sized and also will stretch one in the waist. for example a marked size 28 jeans will measure 30 inches by the BIG method and will stretch 1 so they will end up being a true size 31. so sz28 = 31. note; contextclothing and selfedge measure thier jeans differently at the waist so you have to add 1 inch to all of selfedges waist measurements to equal the apc size on contextclothing. note, this only applied to jeans that don't shrink when soaked in hot water. note, if you live in a bigger city just try the jeans on instore and buy online, nudies should be pretty easy to find.
hope this helps