I have installed Lightbox plugin and its start working. But it displays only main image of woocommerce product gallery not all.
Please have a look of here http://www.effiandhayden.com/product/sexy-lady-t-shirt/ . Once you will click on more images you can see other images of the gallery but these arent displaying inside lightbox.
The gallery you have in this theme is not really a WordPRess gallery or WooCommerce gallery – these images come Yet Another Related Posts Plugin. This means RL will not work there, unless you or theme developer makes some adjustment to the code.