Barbie Shelly Baby Sister of Barbie Doll Bath Time Fun Mattel 1995 No 14552 NRFB | eBay
Kelly/Shelly/Chelsea Incarnations. Left to right: Kelly/Shelly from the 90s, redesigned Kelly/Shelly from around 2010, current Chelsea dolls. (Sorry they are in such rough shape) : r/Barbie