A sleeveless dress with flared skirt for Barbie.

Look for pattern by number at https://web.archive.org/web/20211224010505/http://stickat...
The website is in English & Swedish, but patterns are available in several languages.

On the website you’ll find the patterns listed on the left, by number, grouped on pages.
Accessories like hats and scarves are listed in the accessory section closer to the bottom of the left column.
Click on numbers to open a page, look for the numbered image, then for the link to the desired language below it (clicking on the image will only enlarge it).

This pattern comes in a .doc file, except for Italian version that comes in a .pdf file.

No specific yarn is given in the pattern, it only calls for a 8/4 100% cotton (4-ply fingering weight) yarn.