Beyonce 'not ready' for kids

Beyonce Knowles is in no rush to build a family with her hip-hop mogul husband Jay-Z - insisting she's "not ready" to halt her career to have children.

The couple celebrated their one-year wedding anniversary on April 4 - and the 'Irreplaceable' hitmaker, who's launching the US leg of her 'I Am...' world tour on June 21, admits she'd eventually like to slow down and build a family with the rapper.

But until then, 27-year-old Knowles is content living vicariously through her younger sister Solange and playing aunt to her four-year old son, Daniel.

She said: "I definitely want one (a child) but I'm not ready for all that. I don't think a person should see that before their time. I fall in love with my nephew every time I see him."