Goldie Hawn and Kurt Russell Dress as Royalty for Granddaughter Rani Rose's 4th Birthday

Goldie Hawn and Kurt Russell are getting a royal kick out of being grandparents!

Hawn, 76, posted a photo of herself and longtime partner Russell, 71, on Instagram Sunday, all dressed in prince and princess costumes alongside their granddaughter, Rani Rose.

"Happy 4th birthday our precious Rani Rose🌹You are the real queen!" Hawn wrote. "I'll take Lady in waiting everyday as long as the prince is always beside me! WE LOVE YOU!!! 💕💕💕💕🎂🎂🎂🎂."

Mom Kate Hudson also posted a carousel of photos to toast her daughter, whom she shares with fiancé Danny Fujikawa.

Happy 4th birthday our precious Rani Rose
Happy 4th birthday our precious Rani Rose

Goldie Hawn Instagram

"Our dreamy girl is 4 years today! Happy Birthday to Rani Rose!" Hudson, 43, wrote on Instagram. "Rani fills our hearts so full of love as she meets everyday with enthusiasm, beauty and humor. We partied hard today… the princess way 👸🏼 #HAPPYBIRTHDAY."

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RELATED: Goldie Hawn, Kate Hudson and Baby Rani Grace This Year's Cover of PEOPLE's Beautiful Issue!

In addition to Kate's three children — she shares her oldest son Ryder, 18, with ex-husband Chris Robinson, and second son Bingham, 11, with ex-fiancé Matt Bellamy –– Hawn and Russell also have four other grandchildren: Oliver Hudson's sons Bodhi Hawn Hudson, 12, Wilder Brooks Hudson, 15, and daughter Rio Hudson, 9; and Wyatt Russell's son, Buddy Prine Russell, whom he welcomed last year.

The extended family has happily gathered for both red-carpet appearances and smaller celebrations at home over the years.

RELATED: Kurt Russell and Goldie Hawn's Sweetest Moments With Their Grandchildren

Last year, Hawn and Russell were surrounded by their grandkids as they supported Hudson during the 2021 Golden Globes, where she was nominated for best actress in a motion picture – comedy or musical.

Kate Hudson, Kurt Russell, Goldie Hawn, and family speak during the 78th Annual Golden Globe Awards
Kate Hudson, Kurt Russell, Goldie Hawn, and family speak during the 78th Annual Golden Globe Awards

NBC/NBCU Photo Bank via Getty Images

RELATED: Kate Hudson Posts Sweet Snapshot of 'Favorite Superheroes' Daughter Rani Rose and Jimi Hendrix

In a photo shoot for PEOPLE's Beautiful Issue in 2020, which featured Hawn and Hudson alongside Rani, the mother-daughter duo spoke of the multi-generational bond they share.

"When your daughter has a daughter, it's a big deal," Hawn said. "I mean, it really is."

Hudson herself added that she has relished the special bond she shares with her daughter after having two sons.

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In February, the Mother's Day star opened up about her and Rani's relationship, telling PEOPLE they enjoy spending time together in the kitchen.

"Rani loves food and I cook with her all the time. She's my little helper," Hudson shared, noting that Fujikawa, 36, often steps in as her sous-chef. "She's very precise in everything she does."