Sarah Shahi wrote, "More BTS of Billie!!!"
Clearly, Sarah and co-star Margaret Odette weren't just on-screen best friends.
Sarah noted alongside this BTS pic, "I was obsessed with the club looks."
Sarah looked jaw-dropping in this purple robe and eye shadow.
Sarah gave fans a closer peek at her makeup for the character Billie.
The Sex/Life actress was clearly feeling herself in this look.
"B and B," Sarah wrote on this photo of herself and Adam Demos. "#bts."