MADISON, Wis. -- Madison police arrested two women early Saturday for allegedly engaging in sexual acts for display.

Amy J. Williams, 23, of Michigan., and Meagan E. Kleinheinz, 22, of Madison, are both charged with lewd and lascivious behavior, police said.

Officers were on foot patrol in the 500 block of State Street around 2:40 a.m. when they saw a large crowd in front of a storefront window, watching two females who were directly in front of the window, with the lights on, engaging in sexual acts for display, police said.

Williams was not wearing any clothing, except for her pants, which were around her ankles, police said.

When the officers tried to stop the show, the crowd booed and the women told police they didn't do anything wrong, according to police.