Sue and Noel Radford are set to welcome their sixth grandchild as their daughter Millie, 18, is due next month.
The teenager has been quite vocal about her pregnancy and happiness over bringing an addition to the Radford family.
Despite admitting she's "terrified" to give birth, Millie couldn't hold back the joy when she went for her final 4D scan.
In a recent YouTube video to their 210,000 subscribers, Sue documented their trip to the clinic.
The mum drove down to St Helens to visit Take A Peak, a clinic specialising in ultrasound, 3D and 4D baby scans.
As she asked her daughter if she's excited about the scan, Millie replied: "Yeah I am."
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Then as Millie sat in the chair, the nurse smothered her belly with gel and began the scan.
Wearing a face mask during the check-up, Millie looked excited to see her baby Ophelia on the screen.
Mum Sue can be heard in the background saying "she's got so much hair" as everyone turned to look at the scan.
After hearing the "super strong" heartbeat, the 18-year-old reacted with joy at the news.
During the clip, Sue pointed at her daughter's stomach and said: "I think that bump is massive."
Millie then admitted she "can't stop eating pepperoni" during her pregnancy.
Which is when the nurse revealed the baby is already 6lbs 9oz.
Looking at the camera, Millie gasped and added: "That's very big."
Following the scan, Sue and Millie left the clinic and returned home.
And the pregnant teen shared the adorable 4D scans of her baby girl on Instagram.
In a message to her 66,300 followers, she wrote: "Little Miss Chubby weighs 6lbs 9oz already.
"In the second video, she does an Elvis Presley smirk."