19 DIY Kids' Halloween Costumes That Are So Cute You'll Want to Cry: MOTHER OF DRAGONS. Family costumes are guaranteed to get oohs and aahs when you head out to trick-or-treat (not to mention, they really simplify the costume choosing process). And this one, by Bel & Beau, is the perfect combo of adult humor and kid fun. You get to live out your Game of Thrones fantasy as a pun-ny "mother of dragons" and your little ones get to be, well, dragons. See more at Baby Bird's Farm and Cocina.