The reality star father-of-three and the aspiring model, whose father is singer Lionel Richie, held hands as they took a stroll together.
Sofia flashed her midriff in a fashionable two-piece of boldly-patterned flares and a matching sleeveless top.
It’s on: Scott Disick, 34, and Sofia Richie, 19, held hands as they stepped out for a stroll on Sunday during their romantic getaway to Miami
The blonde teen wore her hair tied back from her face and sported large red cat’s eye glasses.
She stepped out in a pair of maroon slides that coordinated with her outfit that was a mix of blue, maroon and white.
Sofia added a medallion on a gold chain and carried her smart phone.
May-December romance: The sighting of the newly minted couple came hours after they made their relationship official by kissing in public during a night out at a restaurant
Stylish: Sofia flashed her midriff in a fashionable two-piece of boldly-patterned flares and a matching sleeveless top. The blonde teen sported large red cat’s eye glasses
Relaxed: Scott opted for a much more casual look pairing navy shorts and a baggy white t-shirt with white trainers
Scott, meanwhile, opted for a much more casual look for the Florida sunshine.
He wore navy shorts and a baggy white t-shirt with white trainers.
The bearded ex of Kourtney Kardashian sported sunglasses and he and Sofia were accompanied by a couple of male pals.
The bearded ex of Kourtney Kardashian, with whom he shares three young children, and the aspiring model, whose father is Lionel Richie, were accompanied by a couple of male pals
The night before, Scott’s friend Alec Monopoly had shared an Instagram Story video of the two embracing as they sat next to a cake iced with the words: ‘Congratulations Scott and Sophia! (sic)’.
Scott pulls the 19-year-old towards him with his right hand behind her head as he moves in for the full on the lips smooch.
The video showed a waiter applauding as friends filmed the encounter. It’s not clear what Scott and Sofia were celebrating.
PDA: On Saturday night, Scott and Sofia shared a very pubic smooch as they dined out at a restaurant with video of their embracing being shared on Instagram
Celebratory mood: Scott’s pal Alec Monopoly also shared images of a cake that was iced with ‘congratulations’ for the pair
Keeping close: Scott pulled Sofia in for a full on smooch as friends recorded the moment using their smart phones
The new romance comes after Scott was linked to a string of young beauties, most notably Bella Thorne, 19, during the past several months.
He has been separated from former partner Kourtney since 2015 and the two share three kids: Mason, seven, Penelope, five, and Mason, two.
His latest antics aren’t the only ones making headlines in the Keeping Up With The Kardashians world.
On Friday, just ahead of a 10th anniversary special of the E! series to be shown Sunday, It was reported that the youngest member of the reality TV family Kylie Jenner is pregnant.
It’s been claimed that the 20-year-old is four months along with a baby fathered by rapper Travis Scott whom she started dating in April after splitting from longtime boyfriend Tyga, whose ex Blac Chyna is mother to Kylie’s half-brother Rob Kardashian’s ten-month-old daughter Dream.
Kylie and other members of her family have yet to confirm the pregnancy.
More news: It’s also being reported this weekend that Kylie Jenner, the youngest half-sister of Kourtney Kardashian, is pregnant by rapper Travis Scott. She’s pictured in Las Vegas Saturday