On January 29, 2011, Undercover Slut opened for the Murderdolls at l'Elysee Montmartre in Paris, France in front of nearly 1,400 people, premiering "The Jet Black Mafia" era. On February 19, 2011, Undercover Slut headlined the Imbolc Breizh Metal Fest 2011 in the heart of legendary's Broceliande woods. During that fest, 'O' did a cameo appearance on Orties "Plus Putes que Toutes les Putes" live promo-video. On May 28, 2011, Undercover Slut headlined a deathrock festival at Bateau Concorde Atlantique in Paris, France. Right in the middle of the Summer 2011 English riots, Undercover Slut headlined Nambucca in London, England on August 7, 2011. Undercover Slut's "Shadow Song" has been featured on "Kinryu-No-Mai [-Tribute and Support to Japan-]", a charity compilation CD for 2011 Japanese tsunami victims.