If you want to recreate her look, first you'll need a striped tee like this one from Delias. It retails for $29.50 and you can click on the photo below to purchase (click on any photo in this post for more information).
For the red skirt, this American Apparel version would be a good option and retails for only $30.
Rachel topped her striped shirt with a navy cape, but this bolero (on sale for $39.50) from The Limited will give you a similar look.
And finally, some red sandals like these by Michael Antonio which are on sale for $31.48.
Looking for some alternative options? Here are some items that would also work to recreate Rachel's look.