The inspiration for this picture came during a boating expedition Sargent took on the Thames at Pangbourne in September 1885, with the American artist Edwin Austin Abbey, during which he saw Chinese lanterns hanging among trees and lilies. He began the picture while staying at the home of the painter F.D. Millet at Broadway, Worcestershire, shortly after his move to Britain from Paris. At first he used the Millets's five-year-old daughter Katharine as his model, but she was soon replaced by Polly and Dorothy (Dolly) Barnard, the daughters of the illustrator Frederick Barnard, because they had the exact haircolour Sargent was seeking. Dolly, aged eleven, is on the left; Polly, aged seven, is on the right. A sketchbook at the Fogg Museum, Cambridge, includes Sargent's outline designs for the painting, and two drawings at the Tate (Tate Gallery A00850-1) record the precise poses he required for the girls' profiles.
