The Australian star – who is expecting her first child with boyfriend Kris Smith – thinks the former rugby star will be the 'perfect husband' but wants to focus on motherhood before walking down the aisle.
Dannii – who was previously married to actor Julian McMahon – told the Daily Mirror newspaper: 'He'll be the perfect husband. We have talked about it, but this year is just hectic, it's crazy. So there's nothing planned.
'I never thought this would happen to me, it's going to be such a big shock and a change.
"You think you're going have it all under control, but your world goes upside down - in a good way.
'I'll just be concentrating on being a mum. That's what I'll be focusing on."
Dannii, 38, admitted to gorging on sugary treats during the pregnancy, but is amazed that she hasn’t gained as much weight as she expected.
She added: 'I haven't put on that much weight considering I've been eating like a pig. I had 36 Lola's cupcakes sent up to me today - I didn't eat them all, though.
"I should be a lot bigger. The baby is using the energy."
Dannii - who launched her Project D clothing line in London this week –is also working on her autobiography and hinted she is planning to use the book to get revenge on one enemy in particular.
The brunette beauty had a fierce rivalry with Sharon Osbourne when they both judged UK TV show 'The X Factor’ and warned the outspoken matriarch will be unhappy with the contents of the tome.
Speaking about her fellow 'X Factor’ judges, she said: "Will Simon Cowell and Louis Walsh want copy approval? I don't think so.
"Maybe Sharon Osbourne will want to take a look at it first. I've not heard from her in a while. She's not on speed dial."
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