Here is a fully customized Virtuemart shop. It looks very professional and runs very smooth.I have also added some very nice customizations that many other shopping carts have:

1. Dynamic Color Change for items with multiple colors (Dropdown Box)

2. Stock Control for Size and color using Easy Inventory Control

3. Full width Shopping Cart View

4. Optimized Checkout Process

5. Theme and Image Customizations

6. Image thumbnails linking to other variants of an item.

7. Multiple images for products with zoom.

Click Around and add Some things to cart, Try the checkout Process. Leave Feedback in the Forum if you like.

Ultimate Virtuemart Shop http://nextphasedesigns.com/vmdemo/index.php