Check out paperfashion.net by apparel designer Kathryn Elyse Rodgers from Boston. She loves fashion illustration and as you can see by her work, she's very good at it too. Katie has done commission work for Target, Coach, Penelope & Coco, AKW, and Purse Blog to name a few.
Katie's illustration of Diane Von Furstenberg
The original picture (left) as seen on thesartorialist.com and Katie's take on it (right)
For more, take a look at Katie's blog: