Girl reacts to finding out she's going to be a big sister in the best way possible

Awesome footage has emerged from the US of a young girl called Morgan finding out that she's going to be a big sister and reacting in a particularly brilliant way.

The video, filmed in Detroit, Michigan earlier this year, shows Morgan looking at an ultrasound scan, but she's able to work out where the baby is.

Eventually, her mum tells her that the baby is in her stomach and Morgan gets very excited.

"It's in your belly? You have a baby? Oh my God!" she says when it finally clicks.

Her mother wrote online: "We had just picked her up from school and I couldn't wait to tell her.

"The baby in video next to her is her cousin - she wanted Parker to feel the excitement as well."

"She is now the greatest big sister Macy could have asked for," she added.