The stars sparked up on social media on Wednesday.
Stoner queen Miley Cyrus had a very happy 4/20, according to her Instagram.
The singer celebrated the marijuana-centric holiday on social media, posting a pic of her with what appeared to be a joint. Miley captioned the pic simply, “happy 4/20 ?.”
WATCH: Miley Cyrus Passed Around a Joint (Yes, Really) in the VMA Press Room
No surprise, rapper Snoop Dogg was also in on the action, showing off his own branded “Leafs by Snoop” products on Instagram.
(P.S. Remember when Miley and Snoop collaborated on a stoner anthem of their own? Who could forget 2013’s “Ashtrays and Heartbreaks”!)
WATCH: Rihanna Releases NSFW 'Needed Me' Music Video to Celebrate 4/20
Seth Rogen, who has made no fewer than a half-dozen movies in which his character loves weed, shared 4/20 wishes from his hot dog character in the new NSFW animated film, Sausage Party.
Rapper Wiz Khalifa shared a shot of his “Happy 4/20” stash on Instagram, and later, put it to good use, sparking up “2 joints” at the same time.
WATCH: Jason Sudeikis Jokes He Won't Marry Olivia Wilde Until 'Weed Is Legal in Every State'
Wiz even had his own special set of 4/20 emoji, which rapper Juicy J showed off on Instagram. The detailed collection includes every symbol a stoner could possibly want, including impressively-rolled joints, waxes and shatters, and everyone’s favorite, the apple bong.
See how Miley and some other former Disney stars celebrated last year's 4/20 in the video below.
WATCH: Demi Celebrates 'First Blaze' with Miley Cyrus and Joe Jonas on 4/20