The 39-year-old beauty – who gave birth to her first child with partner Kris Smith last July – explained she was forced to raid her boyfriend's wardrobe in the frantic rush to get to the hospital.
She said: "The one time I raided Kris' wardrobe was when I was getting ready to go to the hospital for the birth of Ethan. When we had to go, we had to go, so I just whisked around with helicopter arms and put on anything within reach.
"I had old-man Ugg slippers on, a pair of Kris' tracksuit pants rolled up at the ankle (they were the only thing I could get around the bump), a big winter coat, one of his golf caps and his sunglasses."
Despite her unfortunate wardrobe choices, Dannii admitted the day will always remain in her "rose-tinted photo album" – though she is grateful no one took pictures of her bizarre attire.
She added to Glamour magazine: "I did not look like Kim Basinger in '9 ½ Weeks', and I definitely did not look like Helena Christensen in the 'Wicked Game' video, but it is something I will remember in the rose-tinted photo album of my memory forever.
"I am, however, eternally grateful no one was around with a real camera that day!"
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