J.D.
J.,
When I like to find things for special occasions, I shop at the Last Call store of Neimans at Grapevine Mills Mall. There is also a Marshall's in that mall.
If you like to shop online, one of my favorite sites for cardigans and sweaters is www.spiegel.com. This site has fashions for all sizes.
I hope this helps and gives you options.
Have a great time!
Jodi