Single fold bias tape sewed to the bottom of the pants (as close color as I could find :)
Finished product - Ta Da! The white hem line just looks like the stitching line
I hate it when I buy some new pants, then the first time I wash them, they SHRINK!!! So, I've discovered if I let down the hem and if there's still a line where the bottom used to be, I can do this: Buy the same color of single fold bias tape and sew one side to the bottom edge of the pants, fold the bias tape up and pin and press. Then turn the pants right side out and stitch along the line that used to be the bottom of the pants, making sure that you're catching the top side of the bias tape.