My arms were also my worst.  And after losing all my weight, they were even worse.  I spoke with physical trainers who confirmed that you can't "tighten up" skin.  I would have had to build my arm muscles enormously to fill out any of the extra skin, so I ended up having an arm lift. 

The arm lift didn't make my arms look "normal," but they're much smaller and even though there's still saggy skin (I was told to eliminate all the sag they would have had to pull the skin so tight that I would have lost mobility), it looks close enough to normal, older skin that I can live with it. 

Good luck!  After all we go through to lose the weight, I think it's great to do whatever else you can to feel good about your body.  

You could also look for a compression garment like you would wear after surgery. I had the excess skin removed last year and had to wear a compression garment for like 8 weeks. Perhaps that would be an option?

~Dejah

I was thinking that too, for at least some things. I'm going to look around at those.

This is the site I ordered from:

http://www.makemeheal.com/mmh/product/compression_garments/a rm/index.vm

Thank you for the link! Is there anything you would recommend that was particularly comfortable but effective?

This was my favorite one:

http://www.makemeheal.com/mmh/product.do?id=70521

lift weights and focus on the triceps. Like tricep kick backs, tricep push up, tricep roll up.  It wont entirely fix it but it will firm them up some

These look great - I'm just not so sure about the illusion part...I would worry that I would still be super self conscious.

Kat, at some point, posted about a product called Sleevey Wonders. They aren't quite compression garments or Spanx for batwings, but they are a cover up of some sort that allow a woman to turn sleeveless dresses/shirts into a sleeved garment, which can broaden your wardrobe choices if nothing else. I never got any, but I WANT!

Sleevey Wonders