updated 08/26/2014 AT 1:00 PM ET
•originally published 08/26/2014 AT 3:10 PM ET
New couple alert!
The Orange Is the New Black star, 35, mingled with her costars at the bash – including Taylor Schilling, Dascha Polanco and Laverne Cox – but Armisen, 47, was constantly by her side.
The Portlandia actor was most recently linked to his fellow Saturday Night Live cast member Abby Elliott after a brief marriage to Elisabeth Moss.
Reps for Lyonne and Armisen have not responded to requests for comment.