Pink, Carey Hart wish daughter Willow a happy 7th birthday

June 4 (UPI) -- Pink and Carey Hart took to Instagram to wish daughter Willow a happy 7th birthday.

The 38-year-old singer and 42-year-old former motocross pro dedicated sweet posts to Willow on her birthday Saturday, June 2.

Pink shared a black and white throwback photo of herself kissing a baby Willow. The star is also parent to 17-month-old son Jameson Moon with Hart.

"Happy birthday dear one," she captioned the picture.

Hart posted a snapshot of a purple-haired Willow at her birthday celebration. He and Pink appeared to throw their daughter an ice cream sundae party.

"I love this little girl more than life itself. She is becoming such a strong, smart, sensitive, little girl," Hart gushed in the caption. "I'm so proud of everything you are and I enjoy every moment we are together. Even when you are giving me a hard time!"

"Happy 7th big girl, your mamma, little brother, and papa love you around the moon 10 million times and back," he added.

Pink said in the April 30 issue of People that she and Hart parent their children with laughter and affection.

"[We] try not to take life too terribly seriously," she told the magazine. "We laugh a lot. It's all about our family unit and time spent together, and much less about external stuff."