Pink throws daughter Willow Sage celebratory 'big sister party' as she lovingly cradles newborn son Jameson Moon

She welcomed her second child just a few weeks ago.

But Pink made Saturday all about her firstborn child, five-year-old daughter Willow Sage Hart.

The popstrel, 37, shared a sweet Instagram snap of herself with daughter Willow and newborn son Jameson Moon in the midst of a Big Sister Party.

Thinking of her! Pink shared a sweet Instagram snap with her daughter and newborn son Jameson Moon in the midst of a Big Sister Party

The singer was cradling her newborn son, who was wrapped up in a white cloth, as she posed with her pink-haired daughter.

Willow was lavished with a festive chocolate cake which appeared to read in frosting, 'Congrats Big Sis!', as she sat in front of a bouquet of teal and pink balloons.

Aww: Pink likely thew the party to make her daughter Willow feel special, especially now that she's a big sister

'Congrats Big Sis! #bigsisterparty,' she captioned the snap.    

Pink likely thew the party to make her daughter Willow feel special, especially now that she's a big sister. 

The hit-maker and her husband Carey Hart welcomed baby Jameson less than a month ago, on December 26.

Baby love: Pink introduced her son Jameson to the world after giving birth to him in late November 

Pink announced her second pregnancy back in November by sharing a photo of herself cuddling Willow as she put her unmissable bump on full display. 

Pink - whose real name is Alecia Beth Moore - and Carey tied the knot on January 7, 2006 in Costa Rica.

They separated in February 2008 but reconciled after seeking marriage counseling.

The couple welcomed their first child, Willow Sage, in 2011.  

Family matters: Pink - whose real name is Alecia Beth Moore - and Carey tied the knot on January 7, 2006 in Costa Rica (pictured in May 2016 in Los Angeles)

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