No sooner had royal officials announced that Prince William and Kate, the Duke and Duchess of Cambridge, were expecting a baby than British betting firms began offering a raft of options for punters hoping to make money on the coming birth.

The William Hill firm, for instance, was offering 10/11 odds that the baby will be a girl and similar odds for a boy. A winning bet would mean someone would win £10 for an £11 wager, for a total return of £21.

As of late Monday, the firm was also offering 20/1 odds that Kate would give birth to twins.

Betting firms are also taking bets on a variety of other possible baby outcomes. But they can’t agree on what the most likely name could be.

The bookies at Ladbrokes have pegged Elizabeth as the most likely name, offering 9/1 odds that a female baby would be named after the Queen. Frances (Diana's middle name), John and Charles were in second place at 11/1. The name Diana, after William’s mother, was at 13/1. Longshot names include Rafa and Arsene at 501/1.

The William Hill agency has established Frances as their favourite name, offering 9/1 odds, followed by Charles, Victoria and Diana.

The bookies at Ireland's Paddy Power think Mary, Victoria and John are all equally likely, offering 8/1 odds on each one. Diana and Frances were close behind at 9/1. Fergie was 250/1.

But bettors can wager on much more than simply the little one’s name.

Ladbrokes has a pool going on the day of the week the baby will be born on.

Paddy Power was also accepting bets on who the godparents would be, the birth weight, the time of the birth, and even on the newborn’s hair colour (brown is the current odds-on favourite at 13/8). The firm was offering a 5,000/1 payoff if Kate gives birth to triplets or more.

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When asked about his daughter-in-law's pregnancy, Prince Charles told reporters, "It's a very nice thought to become a grandfather in my old age, if I can say so... I'm thrilled, marvelous."

He also jokingly alluded to Wednesday's hoax, when two Australian radio hosts prank-called Kate's hospital pretending to be the Prince of Wales and Duchess of Cornwall. When approached by reporters today, he replied, "How do you know I'm not on a radio station?"

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The Duchess of Cambridge was discharged from King Edward VII Hospital on Thursday after a 3-day stay. Facing the press as she exited the building with Prince William, she said, "I'm feeling much better, thank you."

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@ ariannahuff : .@lisabelkin: "What Kate Middleton lost when her pregnancy was announced" http://t.co/jaFbqsOb

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Prince William and Kate Middleton's plan to move into Kensington Palace has now been pushed to October 2013 due to asbestos. According to The Daily Mail, the "couple will be shuttling between rented farmhouse on Anglesey in North Wales and Nottingham Cottage in grounds of Kensington Palace."

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According to The Telegraph, it says: "God our creator, we thank you for the wonder of new life and for the mystery of human love. We pray for William, Duke of Cambridge and Catherine, Duchess of Cambridge as they prepare to receive the gift of their child. We thank you that we are known to you by name and loved by you from all eternity, through Jesus Christ our Lord. Amen."

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@ SkyNewsRoyal : #Royal #Pippa and #James Middleton have just departed the hospital where #Kate is, having stayed for approx 2hrs

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@ britishroyals : Pippa & James Middleton are in the hospital to see Kate. Lovely! # royalbaby

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Prince William smiles as he enters King Edward VII Private Hospital to visit his pregnant wife on Dec. 5 in London.

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Just one day after Kate Middleton arrived at King Edward VII Hospital in London, two radio hosts from 2Day FM, a Sydney-based station, decided to play a little prank and ring up the hospital pretending to be Queen Elizabeth II and Prince Charles. And it actually worked -- their call went through a receptionist before they were transferred to the Duchess of Cambridge's nurse.

Here's what happened.

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UsWeekly reports: "I was so pleased to hear the good news and wish mother and baby every health and happiness," Playboy's September 2012 cover girl said of her expecting relative who she has never met.

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@ HuffPostMedia : The media squeals over Kate Middleton's pregnancy http://t.co/HvnpNIOx

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"I would say Harry and Pippa, a Van Cutsem, and maybe one of Kate's close chums from school and that might be it," Joe Little, Managing Editor of the Majesty royal magazine told The Daily Mail.

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Just one day after the big news was announced, Kate Middleton's sister, Pippa, has stepped out in London alone. No word on if or when she plans to visit Kate in the hospital.

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The world ballooned with excitement at the announcement of Kate Middleton's pregnancy, but will the royal style icon change how we see maternity wear?

We dished on this and more on HuffPost Live today.

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@ QueenVicMirror : The palace made it clear earlier today they will not be providing updates on Kate's health unless there is a significant change to report

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@ britishroyals : Prince William has just left the hospital. He was smiling

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After a second day in King Edward VII Hospital, reports the Daily Mail, the duchess is "responding well to treatment." She is reportedly on an IV drip to restore the nutrients she's lost and is being treated by two top "royal doctors." But the Daily Mail adds that Kate's vomiting, a symptom of hyperemesis gravidarum, might last through almost the entire pregnancy.

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“My hyperemesis put my whole family -- and me -- through hell. It’s a depressing and crazy-making illness,” says one woman who suffered from Kate's condition. Read more about hyperemesis gravidarum here.

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While Prince William has already visited his ill wife at the hospital twice, People magazine reports that the queen won't be stopping by. "She doesn't normally go because it disrupts the running of the hospital," says a source. "And the Duchess just wants to recover and get out."

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ABC News reports that Kate will stay at King Edward VII Hospital in London for "several more days" then continue a "period of rest" back at home.

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The Telegraph writes:

If 2012 has belonged to the Queen, as she marked her Diamond Jubilee, next year’s headlines look likely to be stolen by the Duke and Duchess of Cambridge’s baby. The monarchy is more secure than ever.

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"The duchess will not be attending the public engagements this week, as she will be in hospital for a few days and will then need to rest," according to a representative for the Buckingham Palace, E! News reports.

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The Royalist over on The Daily Beast has some new details on how the Royal Family learned the news. The Queen apparently found out today and Prince Harry found out via email.

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Kate's announcement overshadowed another, Vanity Fair notes:

Sadly for the Pope, though, less than six hours after Yahoo reported his new Twitter handle, St. James’s Palace in London confirmed that the Duke and Duchess of Cambridge are expecting a child, effectively knocking the Pope from his slot in today’s Google Trends.

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Earl Spencer, Princess Diana's brother, congratulates the happy couple.

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@ Wilkinson_David : Breaking: William just left hospital #royalbaby

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