Sam Smith is Lily Allens cousin! Wed-23-Jul-14 08:13 Share this By Jay-Jay FeeneyLILY ALLEN and British singer SAM SMITH are cousins!Sam says, "She's my cousin but I've only met her once in my entire life. My family told me for years that she's my cousin... I never believed them so I tweeted her and she tweeted me back saying that we are cousins." You May Also Like Common Kings do a mash-up of Coldplay and Sam Smith Sam Smith and Mary J team up for 'Stay with Me' Lily Allen gets married Become a fan of The Edge on Facebook and on Twitter .