Vanessa and Nick Lachey's daughter Brooklyn has entered her last year of single digits.

And she's growing up so fast—just ask her parents. The Love Is Blind cohosts celebrated Brooklyn's ninth birthday on Jan. 5, posting a before-and-after photo of her wearing a crown on her first birthday and a photo of her from a more recent beach day. In the new snap, Brooklyn was dressed in white overalls and a Cincinnati beanie as she held up heart hands in front of a lake view.

"Brooklyn Elisabeth Lachey, from 1 to 9 in the blink of an eye," the couple wrote on Instagram. "Happy Birthday to our Baby Girl."

And on her Instagram Story, Vanessa couldn't help but gush over her adorable little girl, pointing out her cute cheeks as a baby.

In addition to Brooklyn, Vanessa and Nick also share Camden, 11, and Phoenix, 7, who marked his own birthday last month. 

"And just like that, our Littlest Lachey is 7," the model shared on Instagram at the time. "He's our miracle baby that we never take for granted. The missing piece to our family puzzle, the one who makes us whole… the cherry on top!"

The Lacheys celebrated by continuing their gingerbread house tradition and went on to ring in the new year with a just-as-sweet trip to Disneyland. 

"Happy New Year at the happiest place on earth!" Vanessa captioned a family pic. "2024… we're ready for YOU!"

And, she noted, it was the first time the family stayed up late enough to ring in the new year together: "All three kids (and parents) made it to midnight!" 

Scroll on to see more of the Lacheys' cutest family moments.

Vanessa and Nick Lachey rang in 2024 at Disneyland with their three kids Camden, Brooklyn and Phoenix.

"Happy New Year at the happiest place on earth!" Vanessa shared on social media. "This is the first New Year we all 5 rang in together.  All three kids (and parents) made it to midnight! Haha!"

The family celebrated Phoenix's 7th birthday in 2023 by continuing their gingerbread house tradition. "And just like that, our Littlest Lachey is 7," Vanessa wrote on Instagram. "He’s our miracle baby that we never take for granted. The missing piece to our family puzzle, the one who makes us whole… the cherry on top!"

"So very thankful," their mom wrote. "our world."

The model marked her daughter's 9th birthday in 2024 with this beachy pic. "From 1 to 9 in the blink of an eye," she said. "Happy Birthday to our Baby Girl."

Vanessa attended Disney on Ice with her kids and even got to meet Mickey Mouse backstage. Lucky ducks!

The former Total Request Live host took Halloween spirit to the next level with her fun family costumes based on the animated Disney movie. 

The famous family got their tan on during a winter vacation in paradise.

Is it even Christmas Eve if your family doesn't wear matching pajamas? Well done Lacheys. 

The family enjoyed a tropical vacation together.

Red, white and cute! The Lachey family got patriotic for Independence Day.

The Lacheys posed with the Easter Bunny during a family celebration on Easter weekend. 

Princess Elsa would totally approve. The family dressed up as our favorite Frozen characters for Halloween.