I saw this tutorial on how to hem up jeans while keeping the original hem and had a light bulb moment. Why not try this with a cardigan? And it worked perfectly!
I started out with a regular, long sleeved cardigan from Old Navy.
Determine the length you want the sleeves to be and pull the sleeves back up and over the arm. The excess on mine was right at 3 1/2 inches when doubled over.
Stitch right along the cuff line.
Cut off the excess and pull the cuff right side out.
See how the original cuff is still in tact? You can't even tell that the sleeves were altered.
Let me know if you are confused or have any questions. You can also check out the tutorial on Sew Much Ado's blog for hemming jeans. She does a wonderful job of explaining it, and you can easily transfer the idea over to cardigans, sweaters, or any long sleeved shirt.