Predictions on William and Kate's royal baby abound: A tall redhead named Alexandra?

Published: Friday, July 5 2013 2:45 p.m. MDT

Britain's Prince William stand next to his wife Kate, Duchess of Cambridge as she leaves the King Edward VII hospital in central London, Thursday, Dec. 6, 2012. Prince William and his wife Kate are expecting their first child, and the Duchess of Cambridge was admitted to hospital suffering from a severe form of morning sickness in the early stages of her pregnancy.

Alastair Grant, Associated Press

First-time parents usually have plenty of questions and concerns as they prepare to bring a child into the world. Family members also often fawn over the "baby bump" and speculate on names and physical features.

Soon-to-be parents Prince William and Catherine, Duchess of Cambridge, are facing the same questions and speculation — except it's not just loved ones who are participating.

It is not uncommon for the world's attention to be turned to the royal family during the runup to the birth of a future monarch.

Such was the case when William was born to Prince Charles and Diana, Princess of Wales. Lady Diana Spencer, unlike Kate, had grown up experiencing media pressures, yet it was well known how she felt about her life in the spotlight — even before the age of Facebook and Twitter.

"The whole world is watching my stomach," Diana said during her pregnancy with William.

While Kate hasn't made such a statement, the same fascination with the coming royal baby clearly exists. This week many media outlets have predicted not just his or her looks but they have even considered the economic growth the birth may generate in Great Britain.

Others have taken to placing bets on anything from features to which parent will be holding the child when they make their first appearance. A royal family tree can be viewed online, and the royal child already has a Wikipedia page.

Several baby pictures of the royals have been highlighted, while CNN also recently released an artist's composite-software rendering of what the royal child could look like as a young adult.

Dr. Anand Saggar, a consultant in the South West Thames Regional Genetics Department at St. George's Hospital Medical School, says Kate's roots may help the future king or queen, introducing new genes into the small royal gene pool.

Her genes could also lead to a slightly darker-skinned baby among the fairer royals, Saggar said. "The odds are the child will have darker skin color than the royals might be used to."

As for hair color, Saggar explained to CNN there are likely four options: "light like Dad, dark like Mom, a shade in between the two or red like the baby's Uncle Harry."

While the odds of the royal baby having red hair is a slim 6 percent, the chance the child will be tall is rather high. With William around 6 foot 3 inches, and Kate about 5 feet 10 inches, it is likely that the child will follow in his or her parents' footsteps.

According to Barry Starr, director of The Tech at Stanford School of Medicine, a son would likely be between 5 feet 11 inches and 6 feet 7 inches, and a daughter between 5 feet 6 inches and 6 feet 2 inches.

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Beyond physical speculations, others have began to guess at the royal name, date of birth, time of birth and even the weight and length of the new royal.

As far as the name, royal author Andrew Roberts expressed that more than one guess may end up correct.

"Although we can't know what the child's name will be, we can be sure that he or she will have a lot of them," Roberts said. "Some heirs to the throne (have) had as many as seven or eight."

But the British bookies aren't alone when it comes to gaining money from the royal birth. It has been estimated that Britons alone will spend nearly $400 million on royal baby memorabilia and celebrations, according to the London-based Centre for Retail Research.

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