"Happy St. Patrick's Day!" —Andy Cohen, who posted this photo on Instagram with son Benjamin and dog Wacha on March 17, 2019
Prince William and Duchess Kate enjoyed a pint of Guinness after attending the St. Patrick's Day parade at Cavalry Barracks in Hounslow, England, on March 17, 2019.
"I love the Irish!!! 😉 Happy St. Patrick's Day!! 💚" —Courteney Cox, who posted this photo on Instagram on March 17, 2019
"Someone's not gonna get pinched today🍀 #HappyStPatricksDay #Rani🌹#DontForgetYourGreens" –Kate Hudson, who posted this photo of daughter Rani Fujikawa on March 17, 2019
Duchess Kate pinned a cluster of shamrocks on the First Battalion Irish Guardsmen's mascot, an Irish Wolfhound named Domhnall, during St. Patrick's Day Parade events at Cavalry Barracks in Hounslow, England, on March 17, 2019.
Kim Kardashian West posted this selfie with her maternal grandmother, Mary Jo Campbell, on her Instagram Story on March 17, 2019, as they celebrated St. Patrick's Day and Rob Kardashian's birthday together.
"I just saw my post from last year… smh… My Bad." —Will Smith, who posted this video on Instagram on March 17,2019 — the same thing he posted on St. Patrick's Day the previous year
President Donald Trump and first lady Melania Trump depart after attending services at St. John's Episcopal Church in Washington, D.C., on St. Patrick's Day, March 17, 2019.
"🍀 luckiest uncle 🍀" —Joe Jonas, who posted this image with nieces Alena and Valentina Jonas on Instagram on March 17, 2019
"Happy st Patty's dayyyyyyy🍀🍀🍀🍻" —Vanessa Hudgens, who posted this festive photo with stylist Natalie Saidi on March 17, 2019
Khloe Kardashian posted this Instagram Story photo of niece Dream Kardashian at a March 16, 2019, St. Patrick's Day-themed birthday party for Rob Kardashian.
Kim Kardashian West posted this photo of brother Rob Kardashian's St. Patrick's Day-themed birthday cake on her Instagram Story on March 17, 2019. Rob turned 32 on St. Patty's Day this year.
"Hey, guys, for St. Patrick's Day, Northie's got on my Balenciaga heels and this amazing outfit. Look at these Carolina Lemke sunglasses she took from me. And lemme see this Jojo Siwa bow. You are styling' North!" –Kim Kardashian West, who posted video of her daughter, North West, on her Instagram Story on March 17, 2019
Mixed martial arts fighter and boxer Conor McGregor salutes the crowd before making the ceremonial puck drop at an NHL hockey game between the Boston Bruins and the Columbus Blue Jackets in Boston on March 16, 2019.
Kim Kardashian West posted this image of Paris Hilton on her Instagram Story on March 16, 2019. The socialite was celebrating St. Patrick's Day and her birthday, belatedly, with a house party.
Former President Bill Clinton and his wife, former Secretary of State Hillary Clinton, were in the St. Patrick's Day Spirit as they left brunch at the Edition Hotel in Gramercy Park in New York City on March 17, 2019.
"Happy Shamrock Day" –Rose McGowan, who posted this bewigged selfie on March 17, 2019
Kim Kardashian West posted this image with Paris Hilton at the socialite's belated birthday party via her Instagram Story on March 16, 2019. The socialite was celebrating St. Patrick's Day and her birthday, belatedly, with a house party.
"Swipe for a cool Irish dance ☘️" –Diplo, who posted this photo of himself wearing neon green on Instagram on March 17, 2019
"Today, in honor of St. Patrick's Day and my Irish heritage, I wanted to share this traditional Irish blessing with you. Enjoy! 🍀@thesundaypaper #stpatricksday #reflection#blessing #irishblessing" –Maria Shriver, who posted this on Instagram on March 17, 2019