Kate Hudson wishes her ‘Pa’ Kurt Russell a happy 73rd birthday on St. Patrick’s Day – while Khloe Kardashian kicks off the day with son Tatum sporting green

Kate Hudson celebrated two big days with one post Sunday.

The actress, 44, who just launched her music career, shared a flashback photo of herself and stepdad Kurt Russell, 73, with the caption: ‘Love you Pa! St. Patrick’s Day is always the best because we get to celebrate you.”

‘Congratulations Dad!’ she wrote next to a green shamrock and stars: “We love you!”

The Almost Famous actress appeared to be about seven or eight years old in the photo and was wearing a sleeveless pink shirt.

The Monarch: Legacy of Monsters star looked handsome but grimy in a gray T-shirt and jeans with a beak hat on his head.

Kate Hudson posted this flashback photo to wish stepfather Kurt Russell a happy 72nd birthday, writing: ‘St. Patrick’s Day is always the best because we get to celebrate you’

Khloe Kardashian’s nearly 20-month-old son Tatum wore the green in a pair of precious videos shared to her Instagram Stories.

The tyke was happily munching his breakfast, wearing a light green sweatshirt and a Kelly green beak placed backwards on his head.

The model, 39, fitted the clips to add a green hat, some four-leaf clover eyes and a gold Irish knot chain to the scene.

Gigi Hadid, 28, shared a sweet photo of daughter Khai’s feet next to some small green footprints on the sidewalk.

The three-year-old wore green trousers and white slippers as she tried to track down a gnome.

“We’re on the case!” the supermodel wrote explaining the sweet snap.

Aoki Lee Simmons, 21, shared a photo of herself wearing a string of green shamrock lights as a necklace over a black mini dress on her Instagram Stories.

The model also shared a photo of some green cocktails designed to get the festivities started.

Khloe Kardashian, 39, shared a video of her favorite leprechaun, son Tatum, of almost 20 months in an Instagram Stories video as he munched his breakfast

Khloe Kardashian, 39, shared a video of her favorite leprechaun, son Tatum, of almost 20 months in an Instagram Stories video as he munched his breakfast

The model, 39, installed the clips

She added a green hat, some four-leaf clovers and a gold Celtic knot necklace to the scene

The model, 39, edited the clips to add a green hat, some four-leaf clover eyes and a gold Celtic knot necklace to the scene

Gigi Hadid, 28, shared a sweet photo of daughter Khai's feet next to some small green footprints on the sidewalk.  The three-year-old wore green trousers and white slippers as she tried to track down a gnome.

Gigi Hadid, 28, shared a sweet photo of daughter Khai’s feet next to some small green footprints on the sidewalk. The three-year-old wore green trousers and white slippers as she tried to track down a gnome. “We’re on the case!” she wrote

Aoki Lee Simmons, 21, shared a photo of herself wearing a string of green shamrock lights as a necklace over a black mini dress to her Instagram Stories

Aoki Lee Simmons, 21, shared a photo of herself wearing a string of green shamrock lights as a necklace over a black mini dress to her Instagram Stories

Jane Seymour, 73, shared a photo from an Irish pub with her friend Sally Frankenberg.  'Top of the morning and happy #StPatricksDay to you!'

Jane Seymour, 73, shared a photo from an Irish pub with her friend Sally Frankenberg. ‘Top of the morning’ and happy #StPatricksDay to you!’ “Wishing you a day full of happiness, laughter and maybe a little bit of mischief!”

Olivia Wilde, 40, shared a flashback photo of one of her children, wearing orange shorts and a yellow bear jacket, approaching an abandoned castle and used an Irish flag in the message that she 'misses Ireland on Paddy's Dayyy'

Olivia Wilde, 40, shared a flashback photo of one of her children, wearing orange shorts and a yellow bear jacket, approaching an abandoned castle and used an Irish flag in the message that she ‘misses Ireland on Paddy’s Dayyy’

The actress also shared a throwback photo from a pub, where she enjoyed a pint of Guinness and a bag of chips

The actress also shared a throwback photo from a pub, where she enjoyed a pint of Guinness and a bag of chips

Jane Seymour, 73, shared a photo from an Irish pub with her friend Sally Frankenberg.

The Harry Wilde star, who plays a retired professor who solves mysteries in and around Dublin, wore a green one-shoulder top. and a bow with green and black polka dots on top of her long brown hair.

‘Top of the morning’ and happy #StPatricksDay to you! Wishing you a day full of happiness, laughter and maybe a little bit of mischief!,” the Irish Wish star wrote.

Olivia Wilde, 40, shared a flashback photo of one of her children, wearing orange shorts and a yellow bear jacket, approaching an abandoned castle and used an Irish flag in the message that she “missed Ireland on Paddy’s Dayyy.” The actress also shared a throwback photo from a pub, where she enjoyed a pint of Guinness and a bag of chips.