The discord between the two leading ladies goes all the way back to the early aughts.
We’re professional actresses.
We have our own separate lives."

Did Kristin Davis pick a side?
Let me make this VERY clear.
(If I haven’t already) You are not my family.

You are not my friend.
Many were curious about which side their fellow cast members would take.
And while some like actor Jason Lewis explicitly voiced support for Parker, Kristin Davis did so implicitly.
We are all so incredibly lucky to get to do what we do!"
(viaVanity Fair).
Since Cattrall is missing from the photo, many saw this as shade towards Cattrall.