Sofia Richie has branded Kylie Jenner her "best friend".
The 21-year-old model - who is dating Kourtney Kardashian's ex Scott Disick - dubbed the 'Keeping Up With The Kardashians' star her closest pal as they celebrated Kylie's birthday in Capri, Italy.
In a video of Kylie's 22nd birthday celebrations posted to her social media account, Sofia tells the camera: "Kylie, you're 22 and you've always been one year cooler than me. But I love you. You're my best friend. I don't know what life would be like without you."
It comes after a source revealed Sofia helped Kylie cope after her fall out with her ex best friend Jordyn Woods.
One insider said: "Sofia really helped Kylie through the emotional roller coaster during the Jordyn situation. She was really there for her and took her side through everything.