Willow Sage Hart stole the show on "The Disney Holiday Singalong" when she joined her mum for a tender version of "The Christmas Song."
The singer wrote in an emotional Instagram post how she and husband Carey Hart are striving for "a lifetime of coming back to the table."
The singer and husband Carey Hart celebrate 14 years of marriage this year.
The US president didn't come close to selling out the 19,000-capacity arena in Tulsa, Oklahoma.
The singer has been using her Instagram page to speak out against racism and support the protests decrying police brutality against Black people.
The former motocross champ said both Pink and their son Jameson were "extremely sick."
Appearing on "The Ellen DeGeneres Show," the singer was frank about the relatively easy access she and other stars have had to COVID-19 testing.
The singer said she and her three-year-old son Jameson were "really, really sick," but they're on the mend.
The singer railed at the lack of free and easily accessible testing and hailed "hero" health care professionals.
The pop star promised half a million dollars for "the local fire services that are battling so hard on the frontlines."