Natasha Lyonne and Fred Armisen
Eric Charbonneau/Invision for Netflix/AP
New couple alert!
Stepping out at Netflix's post-Emmy celebration at the Chateau Marmont, Natasha Lyonne
and Fred Armisen
"shared kisses and were very cozy together," an onlooker tells PEOPLE.
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.
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.