Miranda Kerr gave birth naturally because she didn't want a "drugged up" baby.
The 29-year-old model watched a number of birthing videos before giving birth to Flynn, her child with husband Orlando Bloom. She became concerned that an epidural it would negatively impact on her son.
Flynn is now 17 months old.
She explained in the August issue of Britain's Harper's Bazaar magazine: "I had made a decision that I wanted to do it [naturally].
"I had been watching all these baby bonding videos and [without an epidural], when the baby comes out it goes straight onto the breast."
Miranda added in situations where the mother had received medication to help with the birth "the baby was a little bit drugged up and I was like, 'Well, I don't want that'. I wanted to give him the best possible start in life I could."
The Victoria's Secret model also revealed she is happiest when she is spending time with her son.
She explained: "What's surprised me most is just how incredible the bond is between you and your child. To watch him grow and evolve every day is really inspiring.
"[My perfect day is] to wake up to the sound of my son saying, 'Mama, mama!' It's the best sound ever. Then I just love to get him out of bed and he can jump into bed with us, and we have cuddle time!"