Australia mourned with former MKR couple Carly Saunders and Tresne Middleton when they lost their beloved baby girl, Poppy, to leukaemia.

Now, the duo has taken to Instagram to share how one occasion in particular has “hit them hard”.

Little Poppy died, aged 20 months, in February after a courageous battle, with a devastated Carly and Tresne telling fans “she fought tooth and nail until her final breath”.

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Now, in a new post, the couple revealed how Mother’s Day deeply affected them.

“We just wanted to thank your kind hearts for reaching out with messages of love and support on Mothers Day,” Carly and Tresne wrote.

“Sunday hit us hard. It took a toll, but we’re okay, just stacking up our resilience.

My Kitchen Rules couple Carly Saunders and Tresne Middleton with baby Poppy. Credit: carlyandtresne/Instagram

“We miss our baby girl, so much. It feels like a bad dream, it still doesn’t feel real.

“We know now that we need to plan to be surrounded by our people on significant days like this.

“We just didn’t want to taint anyone’s Mother’s Day by getting our sad all over them.”

The couple – who posted a heartfelt video alongside their post – said they spent the day “looking back at treasured time with Poppy Grace”.

“We cooked for hours and hours to try to keep our minds and bodies busy, and we reopened presents that our precious baby cousins brought over on Friday afternoon,” they wrote.

Poppy Grace died after a courageous battle with leukaemia. Credit: carlyandtresne/Instagram

“We hope all of you are okay. We know Mother’s Day is a tough day for a lot of people for various reasons.

“We see you, we feel you and we are sending you hugs and big kisses. All our love and wholehearted gratitude always,” the duo concluded.

It’s been a deeply difficult time for the former reality stars – returning to Australia from a trip to Thailand in April, where they had spent time trying to process their grief.

They said they had gone overseas to “explore healing a Poppy-sized hole in our hearts”.

Carly Saunders and Tresne Middleton in Thailand. Credit: Instagram

Taking to social media, they told of their difficult decision to return home and shared snippets of the trip, along with a raw caption about how they were coping with their grief.

“Home again… it is time to face home again,” the post to Instagram began.

“Our time in Thailand has helped to give us the tools we need to grow and live through this grief.”

In February, the couple held a memorial for Poppy, and encouraged those attending to donate blood to help other little ones fighting the illness.

The couple held a memorial for Poppy and encouraged people to donate blood, platelets or plasma. Credit: carlyandtresne/Instagram

“In lieu of flowers, we encourage you to #RiseUpforPoppy by donating blood, platelets, or plasma to Poppy Grace’s Lifeblood Team,” the couple wrote ahead of the celebration of her life.

“Her little friends with cancer still need your blood.”

The couple has thanked supporters for their “beautiful words of love and support” and for helping to honour Poppy’s memory with blood donations.

According to the couple, the donations that went towards the “Poppy Grace lifeblood tally” saved more than 3237 lives.

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