One-half of America’s most famous set of twins was spotted “getting dirty” at Bungalow 8 Nightclub in New York.

Spies at B. 8 claim Mary-Kate was “weaving around and kept falling off the banquettes she was dancing on.” “She made out with three random guys and was wearing a Mardi Gras mask.” M.K’s rep declined comment-but did state that the former child star is sober.