Meghan Markle, Prince Harry dance in delivery room before Lilibet's birth in new video

Princess Lilibet, the youngest child of Prince Harry and Meghan, the Duchess of Sussex, is 4!

Lilibet, who goes by Lili, was born June 4, 2021, at Santa Barbara Cottage Hospital in Santa Barbara, California, making her the first senior royal baby born in the United States and the first of the late Queen Elizabeth II's great-grandchildren to be born outside of the United Kingdom.

Meghan marked her daughter's fourth birthday by sharing memories on Instagram, including a video of herself and Harry dancing in the delivery room before Lili's birth.

In the video, Meghan, wearing a black sleeveless dress, and Harry, wearing jeans and a hoodie, dance next to a hospital bed to the viral song, "The Baby Momma Dance."

"Four years ago today, this also happened. Both of our children were a week past their due dates… so when spicy food, all that walking, and acupuncture didn't work - there was only one thing left to do! 😂," Meghan captioned the video.

Earlier in the day, Meghan also shared several photos on Instagram, including a current photo showing a rare glimpse of Lili's face and a throwback photo from Lili's birth.

"Happy birthday to our beautiful girl! Four years ago today she came into our lives - and each day is brighter and better because of it. Thanks to all of those sending love and celebrating her special day!" Meghan captioned the photos.

In another post, Meghan shared two photos of Harry and Lili together, writing of their father-daughter relationship, "The sweetest bond to watch unfold 💕Daddy's little girl and favorite adventurer. Happy birthday Lili!"

In addition to Lili, Harry and Meghan are also the parents of a son, Archie, who turned 6 in May.

Prince Harry, Meghan Markle are parents of 2: What to know about their kids

The family of four lives in Montecito, California, where they moved in 2020 after Harry and Meghan stepped away from their senior royal roles and left the United Kingdom.

Meghan has shared details of the family's life in California on her Netflix show "With Love, Meghan," which premiered in March.

"Lili and I actually made this batch [of preserves] together," she tells friends in one of the show's episodes, adding that Lili feels "proud" helping her. "She picked all those berries with me, and then she's like, 'No, no, Mama, I'll do it.' And she wants to try. She's like, 'I'll stir it. I'll mash it.'"

Lili was also featured earlier this year alongside Meghan in a promotional photo for Meghan's lifestyle brand, As Ever.

Meghan Markle's daughter Lilibet featured alongside her in launch of new brand

Last year, Harry told ABC News' Will Reeve that both Lili and Archie were doing "great" and "growing up very, very fast."

"They both have got an incredible sense of humor and make us laugh and keep us grounded every single day, like most kids do," he said at the time. "I'm just very grateful to be a dad."

Meghan Markle, Prince Harry dance in delivery room before Lilibet's birth in new video originally appeared on goodmorningamerica.com