Where can I get jackets like those worn by Samantha Newly in Samantha Who?

I love the way Christina Applegate's character dresses in the show Samantha Who. Especially all the trendy jackets she sports! Most of them are very fitted and hit at the waist. I have no clue where to find cute jackets like these! Links would rock. I'm not rich but I don't ind investing in a good piece of clothing. Thanks in advance :)