Inside Sofia Richie's Epic 21st Birthday Party With Scott and Kylie E! NEWSScott Disick Surprises Sofia Richie with a Luxury Car for Her 21st Birthday: 'Best BF Award' PEOPLE.comSofia Richie Calls Scott Disick 'Best BF' After He Surprises Her With Luxury Car on Her 21st Birthday Yahoo EntertainmentScott Disick Gifts Sofia Richie $200K Luxury Car for 21st Birthday | E!