This sweater is the size small for 11 lb Yorkshire Terrier.
And Size adjustable, so You can knit it from teacup size to Great Dane size.

You can use any yarn and / or any needle you want as long as you knit your own swatch.
I talk about everything you need in the written pattern as well as Youtube channel.

Youtube: https://youtu.be/HwDJyx10SwQ
Instagram: Beginner’s Luckraft