A dress for Barbie.

Plaid effect is obtained by working one color at a time in stripes and slipping stitches. This is called mosaic knitting.
Texture in the top part is made the same way in one color.

Look for pattern by number at http://www.stickatillbarbie.se.
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, scarves or bags are listed in the accessory section, below in 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 fot Italian version that comes in a .pdf file.

No specific yarn is suggested in the pattern, it calls for generic 100% cotton 8/4 (fingering 4-ply) yarn.
Gauge is not given in the pattern but you can find gauge in stockinette stitch in the yarn section of the site.