The "Bedtime Kelly New Baby Sister of Barbie Doll Set" from 1994 by Mattel is a 12-inch Barbie doll designed as a new baby sister. This gender-neutral fashion doll is part of the Barbie franchise and comes sealed in its original packaging. The doll's hair type, eye color, and complexion may vary, adding to the uniqueness of each doll in the set. The set includes the doll, made of vinyl material, portraying the theme of babies in the Barbie product line.