A photographer's Instagram is a great way to see, quickly, the work they've done! You can see if weddings are their main focus or if they don't do them often. You can see the STYLE of wedding they tend to photograph and if that vibes with your style. You can see their overall style of editing and if that speaks to your vision. Are all of their photos dark and edgy or are they light and bright? Every bride has a style of photography that they love, so find a photographer that matches that style. Instagram is such a great way to see that style quickly. You can also learn so much about your photographer's personality through their social media. Their personality, and whether or not it meshes with yours, is so so so important.