Having another baby is a wonderful time for any family, but it can definitely make your eldest child feel a little left out.
And considering that newborns get either a christening or a naming party, it totally makes sense to throw your other children a bit of a bash - being a big brother or sister is an extremely important role and definitely deserves to be celebrated.
So why not do like Pink and throw them a big sister (or brother) party?!
The mum-of-two welcomed her second child Jameson Moon Hart back in December, and to celebrate Willow becoming a big sister the 37-year-old threw her a party.
And there was even cake!
Uploading a gorgeous picture of her two children on Instagram, Pink captioned the photo: "Congrats Big Sis! #bigsisterparty"
Five-year-old Willow looks delighted in the snap - with a cake like that we're not surprised - and Pink, whose real name is Alecia Moore, also looks the epitome of happiness.
Aw, we love the idea.
