This outfit was part of the "Fashion Originals" line and is described in detail in collector unboxing videos:
: A sundress featuring a striped or floral pattern with flocking (a fuzzy texture) on the fabric. Sindy Striped Dress [1446] mp4
: The set originally came with a pink cardboard dress form and a hanger. Notable Sindy Striped Alternatives This outfit was part of the "Fashion Originals"
If you are specifically looking for a striped Sindy dress, there are several historically significant versions from the Pedigree line: Bright 'n' Breezy (Ref 44013) Included Accessories : Hat : A matching wide-brimmed hat
: Reviewers from YouTube have noted that over time, the flocking can rub off, and the fabric of the top may appear somewhat see-through. Included Accessories : Hat : A matching wide-brimmed hat. Bag : A small plastic tote bag. Shoes : A pair of standard plastic heels.
: A rare vintage piece often sought by collectors. While not strictly "striped" in standard descriptions, it is a key piece from that era of fashion dolls.