Just Skirts and Dresses: How to shorten a pair of jeans the right way

This might be not an exciting post for someone who is used to do this on a regular basis but I'm sure beginners will appreciate it. And by the 'right way' I mean: as opposed to how my BF's mom does it. Scroll down for a picture...

I've read about this method somewhere in the early 90's in a magazine. The idea was to cut the original hem off and reattach it again. I must say, didn't used for myself that much but I've found it really handy to shorten my BF's jeans this way. Sometimes it's hard to find the right width/length combination or you buy a pair of pretty jeans on sale with the wrong length.

But, some pants are made extra long for a purpose. Why?
Especially designer jeans, but also cheaper, workwear jeans (like the one below) usually come with just one, standard length. The reason is that they produce only one length for one waist size, because they expect that you want to have perfectly fitted clothes an have the pants altered to your special measurements. If you pay a lot of money to buy those expensive designer jeans they always offer a service to alter it to your measurements. However, usually they won't do that with workwear...
Nowadays, we aren't used to that anymore, so ready-to-wear jeans fabricants offer one waist size in several lengths. The idea is: you just pick up the right length an go. If it fits approximately it should be good enough.
The good news: it's easy to fix!

So why don't we just chop off the hem of a pair of jeans?
- To sew a pair of jeans they use a thick thread, often in very special shades which you can't find on the market. There are probably similar colors but the thread would be too thin. And why would you bother to buy thread just to hem one pair of jeans anyway?
- Another reason is, especially with faded or distressed jeans the hem is often part of the design. They assemble the jeans first before adding design elements of fading or distressing the fabric. If you look at the jeans below on the left, you see that this finish can't be reproduced at home.

Below is what you definitely don't want to end up with!!!
There is one thing left, you need to 'recycle' the original hem somehow.

The method below is what works for me, it's quick and easy. Important is that the width of the original hem is about the same width as the new hem, so it works only for straight legged jeans. (And for children's trousers as well.)
I used white thread for the demonstration, but for a really neat finish I'd choose dark blue or other color similar to the color of the jeans.

1. Measure and mark the desired length you want to remove.
Fold the hems up like below. What you see of the wrong side of the fabric is 1/2 of the the total length you are going to remove (black line)

Important!
The original hem is going to be folded down at the end so it adds some extra length, but most of the time this is not that much.
If you have a wide hem or just want to work perfect, you could subtract the width of it from the total to-be-removed length first and then divide that amount by 2. (That would be then your black line below)

For example:
- want to shorten jeans total by 3 inches
- have an original hem that is 1/2 inches wide
That would be:
3 - 1/2 = 2 1/2 and then: 2 1/2 : 2 = 1 1/4
My folded wrong side (black line) would measure 1 1/4 inches

Press well. You could pin it as well, but for me pressing with steam works fine:

2. With a small stitch length (I use about 2.5) stitch as close as possible next to the original hemline on the wrong side. Match the side seams carefully like below:

This is what it looks like from the right side:

3. Trim the excess fabric. I usually leave as much seam allowance as the original side seams use:

4. Finish the seam allowance. I use a wide zigzag stitch (length 1.0-1.5 and a width of 5, this is the max on my sewingmachine)
Repeat the same for the other hem.