I like this look from the Rag and Bone pre-spring 2009 collection. I really like the rolled up sleeves on the jacket and the top underneath, that makes it look a lot more casual. I think I'd like it even more with a fun girly top underneath.
Similarly, I also like this look.
I think the long vest over the longer sweater looks boyishly sexy, especially with loose hair and skinny jeans.
All photos from the Rag and Bone website.