United Kingdom, Feb. 12 -- Courteney Cox has hailed Jennifer Aniston as a "friend for life" in a birthday post.

The 60-year-old actress played Monica Geller on the classic 1990s sitcom 'Friends' whilst Jennifer starred as waitress Rachel Green and as her co-star turned 56 on Tuesday (11.02.25), she took to social media late in the evening to send her best wishes to her "beautiful and loyal"pal.

She wrote on Instagram: "Happy birthday to my friend for life. Never has there been a more generous, loving, beautiful, talented, funny, loyal friend.

"I feel so lucky to be growing up with you.

"Remember our CATS audition?"

'Friends' ran from 1994 until 2004 and also starred Lisa Kudrow, Matt LeBlanc, David Schwimmer, and the late Matthew Per...