I'm WAY from being little girl and I got one for my horse (see http://www.horseforum.com/horse-tack-equipment/new-browband-i-got-forum-50516/).
The one you posted you can buy in Dover - I see them there all the time. But personally I'd go with one from MIEventer or Ikle, because they do unique designs, and you have lots of options to choose from (color and shape-wise), especially if you want to match your pad or boots, and have something noone else has