Calvin Klein, 79, and his boyfriend Kevin Baker, 34, were snapped on a rare public date in West Hollywood over the weekend.
The pair, who have been dating since around 2016, both cut casual figures as they headed to Mauro's Cafe on Saturday.
Fashion powerhouse Calvin stepped out in laid back style, wearing classic blue jeans, a long-sleeve grey top and grey trainers for the outing with his younger partner.
Kevin also rocked a similar outfit, opting for khaki pants and slim-fit green top for the lunch date ahead of Father's Day.
The model and actor clutched a bottle of water as he strolled through the car park of the Italian restaurant alongside his beau, who shielded his eyes from the blistering sun with some stylish aviator sunglasses.
The Calvin Klein Inc. founder has never addressed his relationship with Kevin publicly but the two are believed to have begun dating back in March 2016, after being pictured together at the Mint Luxury Conference in Mumbai, India.
Later in the same year, the happy couple were spotted at showbiz events likes the 2016 Future of Fashion Runway Show in May and the Broadway Opening Night Performance of American Psycho in New York City the month before.
Towards the end of the year they made their red carpet debut together, stepping out together at the American Ballet Theatre 2016 Fall Gala in October.
Dad-of-one Calvin and Kevin's romance comes after the fashion designer called things off with porn star Nick Gruber back in 2012.
The former couple - who had a 46-year age gap - struck up a romance in 2010, with even moving into Calvin's $20 million penthouse in Manhattan.
When Nick turned 21 in January 2011, then-boyfriend Calvin pulled out all the stops with his celebrations - throwing him a star-studded bash that saw the likes of Anna Wintour, Vera Wang, and Alec Baldwin in attendance.
Their time together as a couple came to an end around April 2012, due to Nick checking into rehab after being 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,' Nick told PageSix after the split.
"I have a nickname called Romeo. I get every girl, and even guys. Something about me draws them all in."
Prior to his relationships with Nick and Kevin, Calvin has been married twice - both times to women.
The CK One creator first walked down the aisle with Jayne Centre, a textile designer, in 1964. The pair welcomed a daughter, television producer Marci Klein, into the world together but divorced in 1974.
Calvin went on to marry his assistant Kelly Rector in Rome in September 1986.
The former couple were married for over 10 years before announcing their split in 1996, eventually divorcing in April 2006.
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