Jennifer Aniston took to Instagram to celebrate her Friends

co-star and BFF Courteney Cox‘s 60th birthday on Saturday, June 15.

The 55-year-old actress — who recently revealed why she would never join TikTok — posted

a carousel of throwback photos of the two along with a heartfelt message. She described Cox, who starred alongside her in the hit sitcom for 10 season on NBC, as a ‘powerful’ woman whose ‘loyalty’ is unmatched.

‘Celebrating this powerful, magical, mystical, interesting, interested, ferociously talented girl today!!!’ Aniston began in the sweet tribute.

‘My sweet CC @courteneycoxofficial… she’s funny like no other, STUNNING on the inside and out,’ the Along Came Polly star continued.

‘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 gushed.

Aniston went on to detail Cox’s intentionality and raved over her interior design skills:

‘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!!

‘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! ❤️,’ she finished.