Fans of pop singer Pink felt the need to offer up lots of parenting advice this week, and she didn't appreciate it very much.

Follow the feud.

It all started with a few pictures on Carey Hart's Instagram.

Carey is a retired, but very well known motocross and motorcycle rider and pop singer Pink's husband. The couple have a two year-old daughter, Willow, who was seen in the pictures riding in front of dad on his bike....without a helmet.

As you can imagine, the comments came fast and furious, especially on Twitter, but Pink makes no apologies. Hit the link below to follow the feud.

Carey Hart's Instagram

The war waged on with close to 1,500 comments on Carey's Facebook page.

Was Pink's daughter safe in her dad's lap, or should Willow have been wearing a helmet?