“My pain in the ass little burst of sunshine sister and I are working together again,” Aniston wrote in October of 2019, “But this time, we’ll be much kinder to one another. (Hmm, then again, we’ll just have to wait and see about that…)”
For those who haven’t memorized the reference in question, Witherspoon played Rachel’s younger sister, Jill, in the episodes “The One with Rachel's Sister” and “The One Where Chandler Can’t Cry.” You can catch the reruns on HBO Max if you need more context for the famous “the only thing I can’t have is DAIRY” line.
Of course, the two are still working together on The Morning Show, which is coming up on its third season on Apple TV+. The last we heard, filming for the upcoming season had wrapped in February, although there’s no release date yet. Until then, we’ll be waiting for an update from Jen’s Instagram.