In this how-to video, you will learn How to Tie a Double Windsor Knot. First, place the tie around and under the collar. Put the wider end over the shorter end, and then pull it under and over the loop. Put it around, under, and over the loop again so that the wide end has gone in twice. Come back up and slip the wide end through the knot and pull. Once this is done, place the collar back down and make sure the tie has a dimple. Straighten out until it looks perfect. By viewing this video, you will be able to tie a perfect formal double Windsor knot. This is especially useful if you are going to a formal party or work.