The Duchess of Cambridge is beginning to recover from her acute morning sickness scare, after spending a second day in hospital.
The news comes just a day after Prince William and his wife announced that she is expecting their first child, 19-months after their lavish wedding ceremony.
Catherine was admitted to hospital yesterday suffering from a condition known as hyperemesis gravidarum, a severe form of morning sickness which lasts all day and can cause dehydration and loss of nutrients in the expectant mother.
However, in a statement today St James's Palace said the Duchess was "continuing to feel better" as she receives treatment at the King Edward VII hospital in London.
Prince William spent most of the day by her bedside, where she is believed to be receiving vital fluids intravenously through a drip.
The medical attention she is receiving by top Royal doctors appears to have aided her speedy recovery. And the happy couple said they wanted to thank everyone for the well-wishes they have received since announcing their good news.
A St James's Palace spokesman said: "The Duchess of Cambridge is continuing to feel better.
"She and the Duke are immensely grateful for the good wishes they have received.
"She will remain in hospital at present and will continue to be treated for hyperemesis gravidarum."
The statement came after Prince William was spotted leaving the hospital in clear good spirits, appearing to smile with relief after a long day spent at Catherine's bedside.
She is expected to remain in hospital for the next few days, and Palace officials said she will require a "period of rest" once she is discharged.
Parents and Pippa expected to visit
Two Royal doctors, consultant Alan Farthing and Marcus Setchell, were seen going into the hospital today.
Farthing will oversee the birth, and Setchell, who was the Queen's surgeon for 20 years, is helping Catherine through her illness.
Catherine's parents, Carole and Michael Middleton, have been photgraphed leaving their Berkshire mansion on their way to London to visit their daughter. They are expected to visit, along with her sister Pippa, shortly.
The Duchess was rushed to the exclusive hospital after feeling unwell at her parents' country estate over the weekend. It is believed the illness prompted the Royal couple's decision to announce the pregnancy earlier than intended.
Catherine is said to be less than 12 weeks pregnant, and it is thought the much-anticipated announcement was not going to be revealed until after Christmas.
The Queen and Prince Charles were not aware she was pregnant until just hours before the official statement was released yesterday.
Her condition sparked speculation that the Duchess could be carrying twins, as HG is more common in mothers expecting more than one child.