make a very small hem after serging the edge and top stitch it twice. If you have a coverstitich that would be even better.

How about copying the type of hen that the factory did originally.

I actually just did this!

For the pants I hemmed (they were for dd) I had to take enough off that I was able to just completely cut away the existing hem and start over, I'm guessing you will be in this boat or you wouldn't bother. I cut it off then serged the raw edge. Folded it up so it looked like the manufacturers hem. I don't have a coverstitch so I just stitched two rows that mimiced the orginal hem. I used my seam guide so I'd have nice straight stitches. Worked like a charm! The only thing that you'd notice is the serged part was white b/c I was too lazy to change over the color just for that one thing, seeing as it was just for us. LOL!

You could have used a double ball point needle to stitch instead of going around twice. Velour doesn't ravel so you just take up what you need, trim and stitch around with the ball point needle.

sometomes I serge a bright contrasting color just for the fun of a funky interior hem.