Delta Goodrem is finally ready to fight with fiance Brian McFadden for the custody of his two children with ex-wife Kerry Katona.

The Australian singer hopes her impending marriage to the former Westlife star will enable them to settle down as a family unit with Molly, 6, and Lilly-Sue, 4 - with Brian hoping Kerry's much publicised erractic behaviour will swing the case in his favour.

A source tells Now! magazine, "It's taken a while for Delta to get used to the idea of being a stepmum because she felt she was too young. But her outlook on marriage and kids has changed recently since the bitter divorce of her own parents.

"Now she desperately wants a stable family home with Brian, his kids and their own children when they're good and ready."