Ethan Edward Smith, who gets his surname from Dannii’s 31-year-old British partner Kris Smith, came into the world at the Royal Women’s Hospital after the X Factor judge had to dramatically abandon plans for a home birth due to complications.

But the 38-year-old singer and her son are now in good health in the hospital’s maternity ward after the birth on Monday.

‘Kris Smith and Dannii Minogue are thrilled,’ said Dannii’s manager, Melissa Le Gear in a statement.

‘Mother and baby are doing well and Dad is very proud. They request their privacy at this special time to adjust as new parents.’

Dannii admitted last year that she had not thought about starting a family until she met Kris, a former rugby player.

Then just last month she told the Mail on Sunday’s You magazine: ‘I just never thought it was something I would do. I had never been broody. No clock was ticking.

‘And I would never have wanted to do it unless I was in the right relationship.’

Kris Smith, she said, ‘felt like the one.’

She added: ‘I’m not scared. I’m so excited. I think that’s because Kris is going to be brilliant.

‘He’s changed nappies before and I haven’t, not even my nephew’s.’

But she appears ready to have even more children, admitting she had already asked Kris during her pregnancy: ‘What if I really start enjoying this and want to have more?’

Kris, she revealed, had wanted them to have a baby as early as possible in their relationship.

There was no doubt she was looking forward to being a mother. She wrote on Facebook and Twitter: ‘Woo hoo, I’m going to be a mummy.’

Sentiments echoed by Kris, who tweeted: ‘Woo hoo – I’m going to be a daddy.’

While admitting that her parents, who live in Melbourne – where Kylie and Dannii were born – would have liked a girl because there were two nephews in the family already, Dannii joked that a little girl would be spoilt.

Kylie Minogue was believed last night (Wed) to be flying to Australia from Spain where she has been promoting her new album Aphrodite, to be with her younger sister, but she has already let the world know of her delight.

‘Congratulations to my sister Dannii and her partner Kris on the happy news!!!’ Kylie tweeted.

‘I am so excited to be an aunty again’ – a reference to the two sons of her brother, Brendan, a tv cameraman.