This bonus variation is designed to be used alongside the original Sonya pattern, which you’ll need to complete your garment.
Bonus variations are a benefit of Seamwork Membership.
The member exclusive bonus pattern pieces for Sonya are cuff variations that can be added to the sleeves of versions 1 and 2. One cuff option has a button placket, and the other is a petal sleeve. Both allow for customizing and getting creative with your Sonya dress, to make it your own.