It seems that Leonardo DiCaprio, who claimed his first elusive Best Actor award, didn't infringe the ceremony's vaping ban. Leo probably didn't want any negative media attention to tarnish his great victory. The Revenant star previously faced criticism for vaping at the SAG awards from the American Lung Association. The charity had described his vaping as "deeply troubling". But Tom Hardy, his co-star, got in on the act prior to the awards by Instagramming a cool picture of himself vaping. Vaping is widely considered a viable option to help smokers quit. With over 2.6 million users in the UK alone, 71% of smokers say they're using the devices to stop smoking traditional tobacco. To find out more about vaping, check out our basic guide.