American singer-songwriter Pink "doesn't know" if her daughter would like a brother or sister, but she knows she will be a "violent" sibling.

The `Just Give Me a Reason` hitmaker, who is married to motocross star Carey Hart, says her three-year-old daughter Willow enjoys being in the spotlight too much, which is why she may not want to have a sibling, reports contactmusic.com.

Asked if she thinks her daughter would like a sibling, Pink said: "I don't know if she would. I think she really enjoys being the centre of attention... I see siblings that are kind of violent toward their younger ones, and I feel like that might be the way she goes with it."