Came across this happy snap at www.shorpy.com, and then found it on the Library of Congress site.
http://hdl.loc.gov/loc.pnp/npcc.16039
Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA
UPDATE (more information from Shorpy site): ‘July 9, 1926. Washington, D.C. “Girls in bathing suits with ukuleles.” Identified in the caption of another photo as Elaine Griggs, Virginia Hunter, Mary Kaminsky, Dorothy Kelly and Hazel Brown.’