Featured Image Resize! Help!

Hi,

I am all of a sudden having a problem with my featured image being too large on the homepage. All of my other images are fine, except for my new post. Does this have something to do with the fact that I just updated my WordPress version? Anyways, if you go to my website, you will see that one featured image is way too large. Any suggestions to fix this??

Thanks!

https://www.fashionhotbox.com