The "Walk Me Home" singer turned 40 on Sunday.
Elton John and Ellen DeGeneres have also rallied around the Duke and Duchess of Sussex.
After Simpson was criticized on social media for dyeing the ends of her daughter's hair, Pink took dye into her own hands and showed fans "blue hair don't care."
"Please keep your hatred and judgment to yourselves," she wrote in the caption of a photo showing her children at the Berlin monument.
The pop star lashed out at mom-shamers on Instagram.
A fan of the performer delivered a baby in the stadium of her Liverpool concert.
The singer said she's also had "several" miscarriages since then.
The singer got real about the transition into motherhood.
“I’ve been depressed, I have anxiety, I overthink everything,” the pop star says.
Sharents -- parents who overshare online -- are creating a digital footprint for their children before kids can give their consent.
The three-time Grammy winner told Ellen DeGeneres that outrage over a bare-bottom image of her 2-year-old son has prompted her to keep her family moments offline.
The singer called her critics "f**king disgusting" for attacking her for posting an image of her son.
The singer said she needed 13 stitches after the incident.
The singer's children, Willow and Jameson, gave her the tinfoil Grammy on Sunday night.
“If you don’t give up and you work really hard ― no one else can ever be you," the singer said.
But Pink didn't "wanna get dirty," according to the singer.
A fan claimed the former motorcross star has a “complete lack of regard" for the couple's children.
The former motocross star warned looters to "think twice" after thefts were reported in fire-ravaged Malibu.