While Cox called McDaid her best friend on Saturday, she's still pretty close to her Friends co-stars. In fact, Lisa Kudrow made a cameo appearance in a funny video Cox posted on Instagram on Sunday.
The hilarious clip sees Cox playing the piano for Brandi Carlile, before the musician hits a high note... which she holds for a shockingly long amount of time. So, Cox takes the opportunity to FaceTime with Kudrow and pour herself a glass of wine, all before Carlile is ready to wrap up the song.
Cox directed Carlile's new music video for "Right on Time."