The “Raise Your Glass” singer says she is putting forth her best efforts when it comes to keeping the peace between the brother-sister duo. She even threw Willow a “big sister party” in the wake of Jameson’s arrival.
“Congrats Big Sis! #bigsisterparty,” Pink captioned a photo of herself, a sleeping Jameson and a smiling Willow in front of a cluster of balloons.
Pink and her husband Carey Hart welcomed Jameson on Monday, Dec. 26. The singer broke the news via social media two days later.
Willow seemed to be welcoming the new baby just fine, as she was shown in an Instagram photo sporting a wide grin as she held her new brother. And she even spent time gearing up for the little boy’s arrival.
“Dry Runs,” Pink wrote alongside an Instagram photo of Willow diapering a baby doll.
This article originally appeared on PEOPLE.COM.