Featured Image overlap issue

I am using a custom WP theme integrating WooCommerce. This is my first time working with WooCommerce and have been able to find answers to all of my questions thus far until now. I am having an issue with my featured image on both the shop page and the individual product page. I am getting overlap in the image border.

You can see my test site at: http://www.lauralook.com/scentual-scents/store/. I have tried adjusting my img margins/padding and nothing seems to be working. Is there something else I can try?

http://wordpress.org/extend/plugins/woocommerce/