product image on product page

Hello Skandha, After nearly a year I am rebuilding the website for my daughter, because there is much dirt in the database. As you can see in the image after this link, I have a problem on the shop page. The product image is too small for the space on the left site of the page. There always is a white space at the right site of the image. Undoubtedly there is a way to get rid of this space (the magnifier glass I already removed) but I cannot find the way. Do you know a way to solve this issue? Kind regards Hans Hagmeijer