So sweet! The heart-warming moment Brendan Fevola's daughters burst into tears of joy after finding out their are going to have a new sister

They announced they were expecting another baby this week during a live segment on his radio show.

And now the Fevola family have revealed the touching moment former AFL player Brendan and his wife Alex told their daughters they are going to have a new baby sister.

The couple's teenager daughter Mia, 18, shared a touching video on her Instagram page, showing her younger siblings Leni, 12, and Lulu, eight, breaking down in uncontrollable tears. 

So sweet! Brendan's eldest daughter Mia shared a heart-warming moment her younger sisters burst into tears of joy after finding out their are going to have a new sister

So sweet! The heart-warming moment Brendan Fevola's daughters burst into tears of joy after finding out their are going to have a new sister

'Are you pregnant?' Lulu asks her mother in the clip, as Alex holds her and says, 'Yes Lulu! It's happiness.'

'I know, I am really happy,' Leni adds through a flood of tears.

On-again-off-again couple Brendan and Alex, who divorced in 2014 after nine years of marriage before reconciling and getting re-engaged, made their big announcement on Tuesday.

'Are you pregnant?' Lulu asks her mother in the clip, as Alex holds her and says, 'Yes Lulu! It's happiness'

'Are you pregnant?' Lulu asks her mother in the clip, as Alex holds her and says, 'Yes Lulu! It's happiness'

Proud: Brendan looked proud as he shared the happy news with his family 

Proud: Brendan looked proud as he shared the happy news with his family 

'We're having another baby!' Brendan Fevola and ex-wife Alex announced they are expecting a fourth child on Fox FM's Fifi, Fev & Byron on Tuesday morning

'We're having another baby!' Brendan announced the couple were expecting another baby this week during a live segment on his radio show

During a live segment on Fox FM's Fifi, Fev & Byron, Brendan said they first suspected Alex was pregnant when she was 'really sick' on a recent holiday. 

'It all happened when we went to America over Easter,' the retired footy star, 37, said. 'Alex was really sick, she thought she was jet lagged. I didn't think anything of it.'

Brendan joked that he 'didn't think it worked anymore' and was taken by surprise when his beautician fiancée showed him a positive pregnancy test.

'We got back... and I was sitting on the couch watching the basketball. Alex came in and sat down and she had that look that I'd done something wrong,' he explained. 

Family of six! The on-again-off-again couple, who divorced in 2014 after nine years of marriage before reconciling and getting re-engaged, made the announcement on Tuesday

Family of six! The on-again-off-again couple, who divorced in 2014 after nine years of marriage before reconciling and getting re-engaged, made the announcement on Tuesday

Getting the kids involved: Later on, the Fevola family staged a 'gender reveal' in the Fox FM studio, popping a large black balloon filled with pink confetti

Getting the kids involved: Later on, the Fevola family staged a 'gender reveal' in the Fox FM studio, popping a large black balloon filled with pink confetti

Four girls! When the pink confetti exploded, Brendan and Alex cheered 'It's a girl!' alongside their three children - 18-year-old Mia, Leni, 12, and Lulu, eight

Four girls! When the pink confetti exploded, Brendan and Alex cheered 'It's a girl!' alongside their three children

'Then she showed me the stick and said, "We're having a baby!"' 

Later on, the Fevola family staged a 'gender reveal' in the Fox FM studio, popping a large black balloon filled with pink confetti.

When the pink confetti exploded, Brendan and Alex cheered 'It's a girl!' alongside their three children.

The way they were: The May announcement marks a new, happy chapter in Brendan and Alex's previously tumultuous relationship

The way they were: Tuesday's baby announcement marks a new, happy chapter in Brendan and Alex's previously tumultuous relationship

Back on! Brendan, who has spoken about his past issues with gambling and alcohol and spent time in rehab, divorced Alex in 2014. They got engaged for a second time two years later

Back on! Brendan, who has spoken about his past issues with gambling and alcohol and spent time in rehab, divorced Alex in 2014. They got engaged for a second time two years later

They're going to be big sisters! Brendan and Alex share three daughters, Mia, Leni, and Lulu

They're going to be big sisters! Brendan and Alex share three daughters, Mia, Leni, and Lulu