Seven as Mademoiselle de Neuf
Le Coeur de Lion was a cafe run by Kathryn Janeway's holodeck identity, Katrine, in 2374, when the Hirogen created the World War II French Resistance holodeck simulation. The cafe was an eatery and lounge that offered fine food, wine and entertainment as provided by a singer each evening. The cafe's owner would greet guest dressed in a white tuxedo and would circulate amongst the guest to share stories and actively manage the business.
Janeway as nightclub owner Katrine
In an attempt to engage the Voyager crew in violent holodeck simulations, the Hirogen placed Captain Janeway, Seven of Nine, Neelix, Tuvok, and B'Elanna Torres in a simulation of the Nazi occupation of France during World War II and had them run Le Coeur de Lion as a cover for their underground activities for the French Resistance during that time. In the simulation, Tuvok was the bartender, Neelix the messenger, Seven of Nine the lounge singer Mademoiselle de Neuf, and Captain Janeway, Katrine, the cafe owner. The Hirogen used neural interface implants that wiped everyone's memory and made them believe they were actually the characters in the simulation. (VOY: "The Killing Game")