The trio were joined by the fourth in their gang, Shay Mitchell, who dolled up in a cute Nicole Miller dress and Christian Louboutin shoes.
Costar Ashley showed off a bit of her back with Lorena Sarbuâ€™s knit cocktail dress with a Swarovski crystal back.
In case you missed it, check out a short preview of Pretty Little Liars! The series returns in January on ABC Family.
10+ pics inside…