Lewis Hamilton and Kim Kardashian’s romance is heating up. After months of dating, the F1 star and businessman made their latest outing a family affair.The star couple was spotted attending Scott Disick’s birthday celebrations. For the intimate celebration at Nobu, Kim arrived with her children, Chicago, Plasm and Saint, while the Formula One champion was seen arriving with her mother, Carmen Larbalestier.After joining the Kardashian-Jenner family celebrations for Scott’s birthday, the mother-son duo were seen leaving the venue with Kim and her children. Photos circulating online showed Kim holding the hands of her children and leading them to the car while Lewis followed behind with her mother.Kim was then photographed leaving Lewis in his car together.The British racing icon and Kim have reportedly been in the same elite Hollywood circle for several years. However, the two only became an item last year after being spotted on romantic vacations around the world. Kim also joined Lewis in Japan with his children. They eventually made their romance Instagram official with pictures of their Japanese adventures together.According to Hola, sources close to the pair describe them as “strong and very happy”, with friends believing Hamilton has finally met his match. A source told US Weekly, “They’re both very committed to making it work. Everyone close to them thinks this could be the endgame for both of them.”Kris Jenner and Scott’s children were also at the party on Wednesday with Kourtney Kardashian.