Pink throws daughter a 'big sister' bash

Pink has thrown daughter Willow Sage a 'big sister party' to celebrate the birth of the adorable family's newest addition.

The singer and husband Carey Hart welcomed their second child Jameson Moon Hart on December 26.

Pink posted a picture on the weekend showing their eldest, five-year-old Willow, beaming and holding a cake that reads "Congrats big sis!". The proud mum sits next to her daughter holding the newborn. The photo is captioned: 'Congrats Big Sis! #bigsisterparty'.

The photo received more than 240,000 likes and hundreds of comments about the "cute" idea.

"You just rock mumhood!" one of her 1.4 million Instagram followers wrote.

"So thoughtful you guys," another person wrote. "What a fab idea," another person commented.

They announced his arrival on Instagram two days later with a photo of mum and bub.

She also told the world about the pregnancy in an earlier post with a photo of the clearly pregnant-looking star and her daughter with the caption: "Surprise!".