Cardi B flaunts her love of diamonds, sports cars and sex on her hard-charging new single, “Bartier Cardi,” featuring 21 Savage.”Bartier Cardi” follows the emcee’s breakout, triple-platinum hit “Bodak Yellow” and precedes her upcoming debut LP, tentatively due out in early 2018. Though she’s yet to detail her official debut, Cardi B has been especially active with guest spots in recent months, teaming with Offset (“Um Yea”), Juicy J (“Kamasutra”) Nicki Minaj and Migos (“MotorSport”), G-Eazy (“No Limit”) and reggaeton artist Ozuna (“La Modelo”).