Ariel Winter (i.e Alex from Modern Family) blows her followers some Irish Kisses.
Neil Patrick Harris shared an adorable video of his 2 children preparing to catch a Leprechaun.
Sarah Michelle Gellar blessed our timelines with this incredible throwback picture.
Cody Christian of Pretty Little Liars shared this post-workout pic with his 3 million plus followers.
Usher proved that he can still look good even when sporting a Guinness Moustache.
Reese Witherspoon looked stunning as ever, sharing some 'gold' in a green dress
Tyra Banks rocked green lipstick and eyeshadow as well as a green sun visor.
Lots of people sported green, including Zach Braff...
and Vanessa Hudgens.
Bella Thorne shared this pic of her looking extremely cold, with the hashtags #stpatricksday and #pattysday
Sasha Pieterse shared this picture of some stunning Irish scenery
Rob Kardashian shared what is quite possibly the sweetest photo in the world...
and because his birthday falls on the same day, his sisters shared some birthday/St Patricks themed throwbacks, including this one from Kylie Jenner...
and an entire album from Khloe.
and finally, here's Robert Downey Jr. in a green morph suit making some new friends.
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