Designer Note: This is a third party widget option from https://lightwidget.com/ that works well. Only thing is that this one doesn't load more posts on scroll and it also doesn't have a lightbox function. When you click on a post it opens the post in Instagram.
Note: It is important to focus on consistency when posting and styling images in instagram... Remember the view will be seeing a grid of images and sometimes when images aren't consistent it can cause the IG section to not look as crisp. I recommend using no more than 2 (3max) filters on images.