Changing images/colors

Hello. I love your plugin and think it’s great. However, I am having difficulties with changing images/colors. This is for a plus size women’s clothes site. Some products come in multiple colors. While the size labels work perfect, when I try selecting a different color, the main image for the product doesn’t change to reflect the other color. I’ve added the images to all variations and attributes. Is there something I’m doing wrong. An example can be seen here: http://http://www.bigandsexysportswear.com/product/plus-size-cutout-tee-tunic/

The page I need help with: [log in to see the link]