Hi LuvMyMan,
It will probably depend on the material. I have a pair of the regular cut in the fischer stripe fabric in a size 38 size that fit more like a size 40 should so they're a bit vanity sized. They have been washed multiple times (though always with cold water and hang dried) and, if anything, they've stretched a bit. I also have a pair in their standard denim like Matt has purchased but in their "Skinny" cut. These fit like a normal 38 should in the waist and haven't shrunk noticeably through the couple washes they've received. I have there old style hickoree fabric in a chore coat and this shrunk considerably bringing the chest size down from around 52 to about 48 and shortening the length of the body and arms noticeably.
I think if you stick with cold water washes and don't run them through the drier, shrinkage should be minimal.
I would like to ask you in one picture you have a pair of pants that appear to have a herrinbone weave pattern, do those pants have a buckle on the back? Thanks for the other tips and information as well.
We are prone to not purchase Levi brand pants now...they are not what they used to be and in our opinion not worth their price...wrangler seems to be a better buy for the money. So to see some nice pants like this is a blessing for a good option.