Author, fitness model and nutritionist Sophie Guidolin has revealed she’s tragically lost her baby.

The mum-of-four announced in December that she was expecting a ‘honeymoon baby’ with her new husband, Dr Andrew Firgaira.

However, the 33-year-old has been battling with debilitating sickness throughout the pregnancy, and this morning shared that she had lost her baby girl.

“I cannot begin to articulate my pain, grief and despair through my entire soul,” Sophie wrote in a statement on social media.

“On Wednesday, Jan 25th, a day I will never forget, my life was changed forever. I gave birth to a beautiful little girl, Pixie via c-section, stillborn.

“I am trying to trust in God’s timing and I have always believed that the universe has my back and no matter how confusing this all feels, I am trying to make sense of this grief with my faith. I feel so guilty for my thoughts prior and I would do anything to have that pain, over this harrowing experience.

“I don’t even have the words on how to write or how to comprehend this. Thank you to my friends, family, their parents my mum for literally dropping everything to fly to be with me in the hardest time of my life.  Maybe some souls were always meant to be angels. Pixie, I love you.”

Sophie and Andrew tied the knot in November last year, and shared their baby news just a month later. Sophie, 33, has four other children with ex-husband Nathan Wallace.

Sophie, who is the founder of online health and fitness program The Bod, has been candid about her pregnancy struggles over the past few weeks.

“Trigger warning to anyone trying to conceive or sensitive surrounding pregnancy,” Sophie captioned a photo of herself laying in a hospital bed just two weeks ago.

“Sharing the not so incredible side to this pregnancy so far, as I never want someone to click my page, see a photo and assume it’s all sunshine, making them feel alone.

“As documented previously, I have loved pregnancy. Every single moment, every kick, even the sickness was made bearable by the fact that a miracle was coming into the world. I want to always be honest on this account with my journey and process I am working through.

“This pregnancy has nearly officially got the better of me. I am so exhausted, I’m so sick. An example today is a beautiful 30 degree day, Andrew’s out on a boat with friends, my girlfriends are out for lunch, Ryders going to the movies…. All as I lay in the hospital on a drip. I just want my life back, or at least the basics.

“The simple things which are so normal in everyday life I struggle to do atm- showers even make me seasick. Eating and drinking and keeping it down.

“I want to say here, I know there are so many women out their dying to feel morning sickness, it’s just that in this moment I feel so alone and defeated and I don’t want someone to look at my page and think my life is easy or perfect. It’s a really hard period. Sending love to anyone who has ever compared to my glowing pregnancy posts and previous twin journey and felt alone, I’m sorry.”

Anyone needing support after a stillbirth can contact Stillbirth Foundation Australia.