LEGO Bright Light Yellow Long Hair with Ponytail and Hairband with Golden Hairband Pattern (17347 / 18138)

LEGO Bright Light Yellow Long Hair with Ponytail and Hairband with Golden Hairband Pattern has been used in at least 2 LEGO sets over the past 10 years, since it was first used in 2014. You can also find this part in at least 2 other colors. It has a design ID of 18138 which can usually be found molded into the bottom of the part.