Some people prefer posting their photos to instagram using a frame, with white borders surrounding the image, n order to preserve the original aspect ratio. People are quite divided as to whether or not this is a good thing to do or not, but if you want to do it, there are lots of ways to go about it. If you use Lightroom, there’s actually a pretty easy way to get the white border effect inside of Lightroom, without having to use plug-ins or go to Photoshop.