How may I help you/ Hey! I would like to know how tall Selena Gomez is? Singer and performer Selena Gomez height is 1.65 meter Okay. How about Justin Bieber? Canadian singer Justin Bieber's height is 1.75 meter Great! How tall is Mariah Carey? The height of Mariah Carey is 1.73 meters Cool! How tall is Vin Diesel? Hollywood actor Vin Diesel's height is 1.82 meters Okay. Thanks for the help! Sure, your welcome