13 celebrities who are outspoken about their love of weed

In honor of smoking holiday 4/20, we've rounded up 12 celebrities who have openly discussed their love of smoking weed.

Some like Snoop Dogg and Rihanna make no effort to hide their habit, but others like Justin Bieber have gone to great lengths to try and keep it a secret - to no avail.

Plus, a few surprise celeb smokers.