Calvin Klein, 81, steps out with model boyfriend Kevin Baker, 35, for a gym session in LA

Calvin Klein has been seen out and about with his much younger model boyfriend, Kevin Baker.

The famous designer, 81, stepped out with the 35-year-old model on Sunday, with the pair photographed heading home after a workout at Gold’s Gym in LA.

For their sweat session, the long-term couple went matchy-matchy in long-sleeved black shirts dark trousers and casual joggers.
 

The couple have been dating for seven years now. It’s unclear how they first met, but they were first seen hanging out together at the Mint Luxury Conference in Mumbai, India in March 2016.

Months later they were spotted leaving the Broadway opening night performance of American Psycho in New York.
 

They would make their first public appearance together later that year when they walked the red carpet at the American Ballet Theatre’s Fall Gala.

Before Klein found love with Baker, he was married to fellow designer Jayne Centre from 1965 until 1974. They share a daughter, Marci, 57, who is a TV producer best known for her work on Saturday Night Live and 30 Rock.
 

Klein then married Kelly Rector in 1986 but they split in 2006. He also reportedly dated ex-porn star Nicholas Gruber – it was the first time he went public with a male lover.

The pair would embark on a two-year romance, with Gruber said to have moved into Klein’s $US20 million penthouse in Manhattan at the time.

But it was all over in 2012 when Gruber checked into rehab after he was reportedly arrested for assault and cocaine possession.
 

“I was the first man [Calvin] fell in love with. I don’t know why, but there’s, like, something about me that attracts everyone,” Gruber told Page Six after the split.

“I have a nickname called Romeo. I get every girl, and even guys. Something about me draws them all in.”

After their split, there were reports Gruber was set to write a tell-all about their relationship, but he was quick to label the reports as false.

“I’m a nice person, not a mean person,” he told Gawker at the time, as per New York Post. “That was false information. I never said that I was gonna write a book. I never would do something like that or hurt someone that I love.”