Jennifer Aniston Moves BFF Courteney Cox to Tears with Bday Message (& Reveals Cox's Nickname in the Process)

Jennifer Aniston is continuing her time-honored tradition of sharing a birthday tribute to her best friend Courteney Cox—and per usual, I'm feeling all the nostalgia.

On Instagram, the Morning Show star celebrated her best friend and former co-star's birthday with a slideshow of throwback photos and a heartfelt message, complete with a reference to her special nickname for Cox. The actress wrote, "Celebrating this powerful, magical, mystical, interesting, interested, ferociously talented girl today!!! My sweet CC @courteneycoxofficial… she’s funny like no other, STUNNING on the inside and out."

Aniston also gushed about Cox's best qualities adding, "Independent in the most gorgeous way, cares for everyone even if she doesn’t know you. Terrified of dogs even though I’ve never known her NOT to have at least two of them. Fiercely loyal to the end. She’ll redecorate a room like nobody’s business. Spot a smudge on a window from a mile (literally) away. She doesn’t care what other people think!!"

She continued, "I can’t imagine a world without her. It’s one of my great honors to call her one of my best friends for life…Happy happy birthday CC. I love you!"

The post, which has more than four million likes, includes a throwback pic from a red carpet event, a screenshot of one of their video chats, a clip from their iconic sitcom, Friends, and a few fun selfies.