Who says you have to wear a suit on the red carpet? Jaden Smith rocked streetwear and trainers. This image appears in the gallery:GRAMMYs 2018: Camila Cabello, Lady Gaga, Cardi B & More Rocked The Red Carpet 14. Who says you have to wear a suit on the red carpet? Jaden Smith rocked streetwear and trainers. Picture: Getty 26 images See the full gallery: GRAMMYs 2018: Camila Cabello, Lady Gaga, Cardi B & More Rocked The Red Carpet