Scott Disick and Sofia Richie make romance Instagram official

Scott Disick and Sofia Richie have taken their romance to the next level by sharing pictures of each other on social media.

After weeks of rumors, the reality TV star and Lionel Richie's daughter confirmed they were dating last week (ends24Sep17) when they were pictured kissing on a beach in Miami, and they have already stepped up their relationship by making it Instagram official.

Scott, 34, posted a picture of the pair posing for the camera near the sea on his Instagram story over the weekend. In the snap, Sofia, 19, gazed off into the distance while Scott hid most of his face behind her head.

Sofia shared a similar picture, although this time full-length and taken from a different angle. It showed Sofia, dressed in a black crop top and high-waisted trousers, standing in between Scott's legs as he perched against a railing and leaned on her shoulder.

During their trip to Miami, the pair were also caught on video kissing each other on the lips while at dinner. She later shared a picture of their dessert on Instagram, and the plate featured the words "Congratulations Scott and Sophia (sic)" written in chocolate sauce.

They were also snapped by paparazzi walking around hand-in-hand.

According to Us Weekly, Kourtney Kardashian, the mother of Scott's three children; Mason, seven, Penelope, five, and Reign, two, thinks his relationship with Sofia is slightly odd.

"Kourtney thinks this fling with Sofia is a little weird, but nothing shocks her anymore," the source said. "Kourtney just wants Scott to be his old self. She shares three kids with him, so she'll always want the best for him and will always make sure he's happy."

Kourtney, 38, has moved on too, and is currently dating model Younes Bendjima, who is 15 years her junior.