In the shot, Pink holds up a ‘Unity Love Equality and a Dash of Nasty’ sign while carrying 3-week-old Jameson in a baby wrap.
Carey, stands in front of Willow, who is seen proudly displaying a miniature sign of her own, reading, ‘I'm Strong I Love.’
‘This is why I love you and your family,’ one supporter wrote, as another added, ‘Thank you Hart-Moore family. I hope Jameson is doing well Momma Pink. He's got one of the best to guide him. Love you Pink.’
Carey also shared images from the march.
‘Very proud of my wife, and it was really special to march in the streets with my family today,’ he wrote alongside a picture of his wife and his son.
He also posted an adorable snap of Willow, clearly worn our from the day’s events.
‘All of that sitting on my shoulders, I mean marching really wore Willz out lol,’ Carey captioned the image.
Pink's family joins countless celebrities marching for women’s rights following President Donald Trump’s inauguration.