A mum was convinced she was having a baby girl... until she checked after giving birth.

Like more and more couples these days, Kim Guiley and her partner Travis chose to invite a photographer into the room to capture the birth of their child.

The result is an album of stunning and stirring snaps of Kim’s labour and arduous home birth. But among the beautiful pictures lies one which had us laughing out loud (yes, genuine LOLs, kids): The moment the couple discovered their baby’s sex.

Kim shared the snap on Instagram, with the caption: “Can’t stop laughing at this awesome capture by our birth photographer @susannahgill_photostorytelling… After a lifetime of dreaming about one of each, but months of feeling so strongly that we were having another girl, this is the moment we discovered Theo’s sex!!”

Can’t stop laughing at this awesome capture by our birth photographer @susannahgill_photostorytelling… After a lifetime of dreaming about one of each, but months of feeling so strongly that we were having another girl, this is the moment we discovered Theo’s sex!!

A photo posted by Kim Guiley (@blendingbeautiful) on Jul 26, 2016 at 10:57am PDT

Already parents to a gorgeous three-year-old daughter named Hazel, the couple were, for some reason, utterly convinced they were bringing her little sister in to the world.

So much so, Kim explained on her blog, that it was a couple of minutes before she even checked between her new baby’s legs.

“Shocked is an understatement — I was blown away and totally elated,”  she wrote.

“I have always dreamed of having both a daughter and a son but throughout my pregnancy, I had convinced myself we were having another girl.

“In that perfect moment, all of my dreams had come true. My family was complete.”

You can check out more of Susannah Gill’s photography on Instagram and her website.