The South African believes the child will share a likeness to its paternal grandmother Princess Diana - but not her blonde hair
- A geneticist has predicted the face of the teenage offspring of the Duke and Duchess of Cambridge.
Since the couple announced the pregnancy in December, artists and forensic experts from across the globe have put forward their impressions of the how the world's most eagerly anticipated baby will look.
But South Africa-based geneticist Suretha Erasamus has gone further and is one of the first to predict the face of the royal in adolescence.
Face of a royal? If the couple have a daughter she will look like her mother and have a good chance of inheriting Kate's dark hair. If it is a boy the geneticist expects him to inherit William's mouth and strong jawline
Ms Erasamus works with families to help them understand and make decisions about genetic conditions.
But she has taken her skills and created a best guess of what the future King or Queen will look like.
With their strong jawlines and bright blue eyes, the resemblance between the images of the teenage girl and boy and their parents is clear to see.
And as well as their parents, Ms Erasamus believes the teenage royal will share many of the features of its paternal grandmother Princess Diana.
However she does not think it likely that the child will have her famous blonde hair.
The mock-up of a girl as a toddler has large eyes similar to Kate's, while the young boy bears a striking resemblance to William as a small child
However, instead of Kate's green eyes, Erasamus predicts the teenage princess will boast the blue eyes of Princess Diana and Prince William.
The teenage girl in the computer generated image has strong echoes of both Kate and Princess Diana but also shares a likeness to Prince William's first cousins Eugenie and Beatrice.
If the Duke and Duchess have a boy, then Erasamus believes he will much more closely resemble his father as a teenager.
It is predicted the baby will have his mother's dark hair rather than the blonde hair of its paternal grandmother
However, she said the baby is likely to bear some of the facial characteristics of Princess Diana because of the strong resemblance between Prince William and his mother
In the image, he shares William's strong jawline and has his mouth and teeth.
But he will have the darker, arched eyebrows of his mother, according to the geneticist.
Such is William's strong likeness to his mother that Erasamus believes there is a good chance the royal baby will also look similar to Princess Diana.
However, she said there is a good chance the baby will inherit Kate's dark hair, as dark genes are stronger than light ones.