J Crew Liberty of London Popover in Liberty Hera feather print. Excellent condition. A lightweight layer from London's Liberty Art Fabrics.. famous for its signature prints since 1875. This peacock pattern is one of its signatures -it first appeared in Liberty's pattern books in the 1890s. • Cotton/silk. • Button placket. • Long sleeves. • Functional buttons at cuffs. • Chest pocket. • Machine wash.