Tina Fey and Amy Poehler join Jimmy Fallon for movie promotion, game

Tina Fey and Amy Poehler stopped by "The Tonight Show Starring Jimmy Fallon" to promote, and debut a trailer for, their upcoming movie "Sisters," but it was a particularly funny game of True Confessions that stole the show.

The three former "Saturday Night Live" cohorts reunited at an old police questioning-room-style table stocked with coffee and cigarettes to grill each other about whether various statements they made about themselves were true or false.

Explaining the game, Fallon said, "In front of each of us are two envelopes containing confessions. In one of the envelopes is something that actually happened to us in real life, and in the second envelope is a lie." The player on the stand was then questioned for 60 seconds as the other two players tried to discover whether the statement was a lie.

First up was Fey, whose statement read, "I was once mistaken for a prostitute in Monaco." She later added that during this alleged exchange, she was wearing a brown polka-dot jumpsuit from Express.

Later, Fey and Poehler premiered a trailer for "Sisters," a comedy about middle-age women who return to their childhood home and throw a high school-style party before their parents sell the house.

The movie, which will be in theaters on Dec. 18, is the second time the pair is starring side-by-side on the big screen. Their first collaboration was "Baby Mama" in 2008.