Britain's Duchess of Cambridge is rumoured to be expecting twins.
The Duke and Duchess confirmed they were expecting a baby yesterday, after Catherine was admitted to a London hospital due to severe morning sickness.
Today, Prince William was back at the hospital visiting his wife as she continues to suffer from the pregnancy-related illness.
Catherine is reportedly resting in the medical centre after being admitted with hyperemesis gravidarum, a condition which is more common when multiple babies are expected.
"The good news is that hyperemesis usually means a strong baby," Dr. Manny Alvarez, senior managing health editor for FoxNews.com reported on the website. "I have to wonder if she's having twins."
Since the medical condition was announced, bookmakers have been cutting their odds on twins from 50/1 to 8/1.
This follows British newspaper The Daily Telegraph reporting that hyperemesis gravidarum is associated with a trebling in the chances of having twins.
Whether boy or girl, the first born child will be next in line behind William in succession to the British throne, Cabinet Office officials have said.
Speculation is also rife about the potential baby names being considered by the Royals.
Bookmaker Paddy Power has released the current favourite name as being Victoria, with the odds coming down from 20/1 to 8/1.
Elizabeth, Diana and Charles are among other favourites being bet on by royal fanatics.
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