Police say they responded to the residence on Lambert Road in New Canaan at around 11:45 p.m. Sunday after receiving a report of a possible party with loud music playing.
A subsequent investigation determined that youths present had consumed alcohol, said New Canaan PD Lieutenant Jason Ferraro.
Two 21-year-old women believed to be twin sisters with the same birth date and last name were identified as hosts and residents of the house.
They were each issued a misdemeanor summons at the scene for permitting a minor to possess alcohol and are both due in court on Friday, July 23.
Click here to follow Daily Voice Rye and receive free news updates.