Pink gave birth to her baby son on December 26 and the star is making sure her firstborn is enjoying her time as a big sister - by throwing her a fun-filled party to celebrate!
The 37-year-old singer took to Instagram to share a sweet snap of her 5-year-old daughter beaming beside her mother as she held onto her newborn.
"Congrats Big Sis! #bigsisterparty," Pink captioned an adorable picture.
Pink shares baby Jameson Moon Hart and Willow with her husband of 11 years, Carey Hart.