Courteney Cox congratulates bestie Jennifer Aniston - voila! celebs. Aniston celebrated her 55th birthday this week and as usual received heartfelt wishes from all over.

Cox shared a new post with her 14.9 million followers, to wish her close friend the best. In the caption of the sweet greeting, Kourtney expressed her love for the old bestie and even revealed to her followers the nickname she likes to call Aniston: "Happy birthday my sweet Jenny Louise"