Robert Tonner Tyler Wentworth 16" Doll Custom Dress Made 1999 Doll 10U.
 
This one looks like the Stopping Sydney doll to me but the date is 1999 on her back so I do no know
if it is that doll that had a custom made dress made for it.
 
The product is a 16" Robert Tonner Tyler Wentworth doll from 1999, featuring blonde hair, straight hair, blue eyes, and a light complexion. It is part of the Tyler Wentworth Collection, designed by the artist Robert Tonner. This vintage fashion doll is a collector's item, with bendable limbs and does not come with any packaging. The doll, made in China, falls under the Caucasian ethnicity and is targeted towards adult collectors who appreciate its theme of fashion and beauty.