It's something every parent deals with: sibling rivalry. When you already have one child and you're pregnant with a second, you worry how your eldest will take it.

Pink, 37, has the perfect solution. After welcoming her second child, a son called Jameson, in December, the singer made sure her five-year-old daughter Willow didn't feel left out.

A photo posted by P!NK (@pink) on Jan 14, 2017 at 6:15pm PST

Pictured amongst green and pink balloons, Pink shared a photo of herself with Willow and Jameson as Willow holds a cake that reads, "Congrats big sis!"

Yes, that's right. Pink had the brilliant idea of throwing a "big sister party" for Willow, so all the attention wasn't focused solely on baby Jameson.

It's pure genius.

A photo posted by P!NK (@pink) on Dec 31, 2016 at 2:56pm PST

Moms, take note. A big sister or brother party is the perfect way to make sure there's no early onset sibling rivalry between your kids.

But if, you know, a cake and balloons are a bit too much for a new mom, there's no pressure. The concept of this party comes down to one thing: attention. You could also just stick a candle in your eldest child's dinner and clap when they sit down. It will have the same effect.

Congratulations again to Pink, her husband Carey Hart and Willow. Jameson is a very adorable baby.