What began as a routine pregnancy ultrasound turned into an unforgettable moment for a Canadian couple after their unborn baby appeared to smile moments after hearing her father's voice.

The emotional incident, captured during a prenatal scan, has since gone viral on social media, with millions of viewers praising the touching bond between the parents and their unborn child.

Emotional Moment During Routine Scan

The expectant mother, Lia Oliveira, was undergoing a routine ultrasound examination when her husband leaned over, kissed her baby bump and began speaking affectionately to their unborn daughter.

According to the family, he greeted the baby with, "Good morning. Happy Saturday," before playfully asking if she was hungry.

Seconds later, the ultrasound screen appeared to show the baby's face forming what looked like a smile, prompting an emotional reaction from everyone present.

Family and Medical Staff Left Emotional

As the baby's facial expression appeared on the monitor, family members and medical staff watching the scan broke into cheers.

Those in the room encouraged the father to continue talking to the baby while the expectant mother became emotional and was seen wiping away tears.

The special moment was recorded by Lia's sister and later shared online, where it quickly gained widespread attention.

Mother Calls It a 'Core Memory'

Lia described the experience as one of the most memorable moments of her pregnancy.

She said seeing what appeared to be her daughter's reaction to her father's voice overwhelmed her with emotion, calling it a "core memory" that the family would cherish forever.

The couple also expressed happiness that their personal moment had brought joy to people around the world.

Video Wins Hearts Online

The clip has received widespread appreciation across social media platforms, with users describing it as heartwarming and uplifting.

Many commenters noted that unborn babies can respond to sounds and familiar voices during pregnancy, while others simply celebrated the emotional connection between parents and their unborn child.

Several users congratulated the family, saying the video was a reminder of the unique bond that begins long before a baby is born.

While the baby's facial movement appeared similar to a smile, such expressions seen during ultrasound scans can have multiple explanations, and the video has primarily been shared as a touching family moment rather than medical evidence.