Walmart offers the Girls' 2-Piece Pajama Set in Hello Kitty, Princess, Monster High, Minions Fleece, or Minions Button-Front for $3. Choose in-store pickup to dodge the $4.97 shipping fee. That's $9 off list and the lowest price we could find. They come in sizes 4/5 to 10/12, although not in all size/color combinations.