The singer's husband, Carey Hart, also shared well wishes for his daughter.

\"Happy 8th b day to my daughter Willow,\" he captioned a shot with her. \"I love you so much that it hurts. I enjoy everyday we have together, even the days I wanna squeeze you.\"

\"You are growing into an amazing lil person and I’m so proud of you,\" he continued. \"Love to you the moon, around it 10 million times, and back.\"

View this post on Instagram

A post shared by Carey Hart (@hartluck) on Jun 2, 2019 at 10:43am PDT

\"You cooked a good one mama @pink,\" he added.

It appears the family had an action-packed birthday party for Willow Sage, as Pink uploaded a video of herself doing gymnastics that day during the celebrations.

\"When mom embarrasses you at your own birthday party,\" she captioned her video.

View this post on Instagram

A post shared by P!NK (@pink) on Jun 2, 2019 at 8:46pm PDT

\"Thanks @tempest_freerunning_academy for the best birthday party ever, and thanks Instagram for knowing exactly what leggings I needed to buy,\" she added.

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