Kourtney Kardashian Is Stepson Landon Barker's Biggest Fan

Kourtney Kardashian and stepson Landon Barker sing on TikTok to his new song, ‘Friends With Your EX.’ Landon’s sister, Alabama Barker, and his girlfriend Charli D’Amelio’s older sister, Dixie D’Amelio, also showed their support by rocking out to the track.