Vintage circa 1940s Butterick sewing pattern 4385. Girls One-Piece Dress: Bolero-Effect. There's a make-believe bolero that's cute and perky on the dirndl-skirted dress. The inserted belt snugs in the waist prettily. Puffed sleeves. The bodice buttons mid-way down the back. Contrast for the collar, belt and bodice trim (A). Pattern pieces are NOT printed.