Seven Year Switch's Cassie and Ryan welcome their new baby girl.

Seven Year Switch couple Cassie and Ryan have welcomed a baby girl to their family, after a rough few years.

Mena Lee Thistleton was born at 5:44pm on Tuesday, weighing 7lb, 3oz.

Cassie and Ryan shared a photo on Instagram of their family, including the new addition, earlier today.

NEW ARRIVAL! ???? Mena Lee Thistleton ???? Tuesday 14 June 2016 ???? 7lb 3oz (3330g) ???? 5.44pm ???? Mena made quite the entrance and spent a short time in special care, keeping in trend with her siblings and scared her Mumma and Dadda, however is doing extremely well and we hope to have her home shortly! Daddy was amazing and Mumma is doing great! Ryan and Cass xo #sevenyearswitch #ryanandcass #newborn #MenaLee #instababies #photooftheday #number4 #family #love #nofilter #instadaily

A photo posted by Ryan And Cass (@ryanandcass) on Jun 15, 2016 at 2:33pm PDT

‘Mena made quite the entrance and spent a short time in special care,’ the couple wrote. ‘Keeping in trend with her siblings and (sic) scared her Mumma and Dadda, however is doing extremely well and we hope to have her home shortly!’

Cassie and Ryan have previously spoken about their emotional pregnancies, with Ryan becoming emotional on Seven Year Switch while telling his experimental partner Michelle about their stillborn child.

Watch a recap of the Seven Year Switch reunion. Post continues after video.

“We’re expecting our fourth baby, we found out a couple of days before we started filming. We wanted to keep it quiet for the time being since we’ve had hardships through our pregnancies,” she said.

Just under a month ago, the couple shared a photo of their family, and opened up about the son they lost.  

One of our Favs! ???? Ry and I are expecting our 4th bub very soon!! I know this number confuses a lot of people (spesh journos!) because you only see two babes in this pic?! Here it is.. We have a son who is not with us. He may have passed away when we went into labour at 37.5 weeks and even though we didn’t get to bring him home from hospital it doesn’t make him any less of a human and he deserves recognition as our child too! Dex (our son) was perfect to the eye, seemingly healthy and his death is still unexplained. We didn’t get many memories with Dex just a few short hours, and just because I’m not flashing up pictures of our son playing with his sisters it doesn’t mean that this little boy is any less a part of our family. He is in our every thought. We speak about him everyday. He is a big part of our life, as is any other parents child past or present! Dex was considered Stillborn. We had a funeral. He had a coffin and he has a birth and death certificate. He was REAL. He was our first born son, my second child (Ryan’s first) a little brother to my eldest and a big brother to little Em and our next little girl. ????✨ #sevenyearswitch #happiness #family #stillbirth #ryanandcass A photo posted by Ryan And Cass (@ryanandcass) on May 24, 2016 at 1:43pm PDT

“Ry and I are expecting our 4th bub very soon!! I know this number confuses a lot of people (spesh journos!) because you only see two babes in this pic?!” the couple wrote.

“Here it is.. We have a son who is not with us. He may have passed away when we went into labour at 37.5 weeks and even though we didn’t get to bring him home from hospital it doesn’t make him any less of a human and he deserves recognition as our child too! Dex (our son) was perfect to the eye, seemingly healthy and his death is still unexplained,” their caption continued.

“We didn’t get many memories with Dex just a few short hours, and just because I’m not flashing up pictures of our son playing with his sisters it doesn’t mean that this little boy is any less a part of our family. He is in our every thought. We speak about him everyday. He is a big part of our life, as is any other parents child past or present!

“Dex was considered Stillborn. We had a funeral. He had a coffin and he has a birth and death certificate. He was REAL,” they added.

“He was our first born son, my second child (Ryan’s first) a little brother to my eldest and a big brother to little Em and our next little girl,” Cassie and Ryan concluded.

While it’s been a hard road for the couple, we wish them and their family all the best as they take beautiful Mena home.