Jennifer Aniston has “always known” that Paul Rudd is the "sexiest man alive".

The 52-year-old ‘Friends’ star didn’t need People magazine to give the actor the title of the ‘Sexiest Man Alive’ — which they did earlier this week — as she thinks everyone has “always known this” about the Clueless star, also 52.

Jennifer congratulated Paul on his achievement, writing on Instagram: “This makes me so happy. We’ve ALWAYS know this, but Paul Rudd is officially @people’s Sexiest Man Alive. (sic)”

jennifer aniston on paul rudd ig story still
Congrats! Jennifer Aniston gushes over frequent co-star Paul Rudd's 'Sexist Man Alive' title. 

Along with the magazine’s official snap, Jennifer posted a still of the pair cuddling in ‘The Object of My Affection, a 1998 romantic-comedy they played love interests in.

The Morning Show star quipped: “You don’t age, which is weird. But we still love you.”

Jennifer and the Ant Man star also worked together in the 2012 comedy Wanderlust. 

However, their best-known collaboration is the last two seasons of Friends — the show that made Jennifer into a massive star after she played Rachel Green from 1994 to 2004 — when Paul took on the recurring role of Mike Hannigan, the eventual husband of Phoebe Buffay, played by Lisa Kudrow, 58.

Paul recently shared the joy he was finding in showing the still much-loved television show to his 12-year-old daughter Darby — whose mother is Julie Yaeger, Paul’s wife of 18 years — and finding it all “nostalgic” looking back.

Paul said: "I hadn't really revisited many of those episodes. But now that she's watching it, it's like, 'Oh, I remember this,' and I tell her some story about it.

“I'm far enough away from some things now that I can allow myself to be a little nostalgic about it.”

He said that hanging out with his family — which also includes his 17-year-old son Jack — is one of the things he likes “the most.”

He said: "I just hang out with my family when I'm not working. That's what I kind of like the most." 

Catch Paul in the Apple TV+ series The Shrink Next Door, as well as Ghostbusters: Afterlife, opening in cinemas on Nov 18. — BANG SHOWBIZ

Photo: TPG News/Click Photos