Also be sure to measure the bed frame, if you already have one. This will also need to fit within the headboard. The general rule when measuring the height of the headboard is this: measure half way up the wall of the room where the headboard will be placed against. Your headboard should never exceed this height! Try to find a headboard that either reaches half way or down to a few inches below that point. This will prevent the headboard from "crowding" and overpowering the room.
However, with passage of time, even this feature saw a change in it. Modern sleighs are well designed to pay greater emphasis to stress it more. The rationale behind doing so is to give sufficient room for comfort to its user and it normally helps in avoiding one’s head hitting on the curl. You can see the market being flooded with wide varieties of it, which is often preferred by those who want to make a style statement.