If you want a similar (faux) fur vest, try this version from Forever21. At first glance it does seem pretty different, but the belt shown around it is removable! It retails for $32.50 and you can click here to purchase.
Product Code: 2056044060
*Update - 7/30/09* - The Forever21 vest featured here is long gone, but I just spotted another (faux) fur vest that might work if you're still in the market for one. It retails for $60 at Fred Flare and you can click on the photo below to purchase!
*Update - 9/12/09* - Julie just emailed me to let me know that Rachel Zoe has a great faux fur vest as part of her QVC line and it's available right now for $79.80. Just click here to purchase (comes in three color options).