Pink is making sure Willow loves being a big sister.
The 37-year-old singer took to Instagram to give fans a peek at her fun-filled Saturday, which included a "big sister party" for her 5-year-old daughter.
"Congrats Big Sis! #bigsisterparty," Pink captioned an adorable pic of herself holding her newborn son Jameson Moon, while Willow smiled in front of a cake made just for her.
The "Raise Your Glass" singer has had a lot to celebrate recently. Last week marked Pink and husband Carey Hart's 11th wedding anniversary, and son Jameson was born the day after Christmas.
See more on the adorable family of four in the video below.