By Andrew McCarty Seven years ago, the Sports Illustrated Swimsuit search opened the door for a few models. One of them was Megan Williams, who went on to become a regular on the Victoria Secret runway. In 2015, Williams was highlighted in Sports Illustrated Swimsuit’s search for the next top model. Here’s a behind the scenes look at her shoot. Here’s more from her casting call, via Sports Illustrated Swimsuit: SURE WE’VE been a little thin on the brunette/redhead coverage, but can you blame us for wanting to ensure we’ve covered our bases before the Great Blonde Apocalypse goes down? And we h…