Kokoshnik (and/or ochipok) patterns. This is one particular sort of kokoshnik/koruna - obv. not the famous "fan" type.

Russian peasant costume

Illustrated in full colour throughout: "Russian Traditional Dress" set of postcards from 1962 (Central Russia) Lomography

Russian Traditional Clothes

Russian traditional folk clothes for non nobel people: bast shoes, shawl, shugay, sarafan, kokoshnik etc.

FolkCostume&Embroidery: The 5 types of Russian folk Costume - vest based on sarafan, side seams at angle

Tradition Lives On in Powerful Photos of Danny Burstein and Cast in Broadway's New Fiddler on the Roof

Как сшить круговой сарафан - Этноэкология: экология и культура

Pope Costume, Sewing Patterns, Costume Patterns, Clothing Patterns, Vintage Patterns, Dress Patterns, Pattern Drafting, Sew Pattern, Sewing Hacks