Hollywood's Sweetest Family #Ussies

From Gwen Stefani to Hilary Duff, see which stars are having fun snapping pics with their adorable tots

PINK

"The most important jewels that will ever be wrapped around your neck are the arms of your children. Good job Mamas," shared the singer in an endearing Mother's Day Tweet, which also included a sweet pic of herself and 2½-year-old daughter Willow.