A spokeswoman for Pregnancy Sickness Support, a charity which helps women with Kate's condition known as hyperemesis gravidarum, said the Duchess would be experiencing constant nausea with regular vomiting ahead of Wednesday's Hobbit screening.
I would be amazed if she's able to go to the premiere. When she's more like 14-plus weeks possibly she will have days when she can do that.
The sickness is constant and ongoing, it's just a matter of keeping on top of it. She might have days that are a bit better than other days but realistically you don't have days when you're actually well.
The Duchess of Cambridge left hospital today, after three days of treatment for a severe form of morning sickness.
A nurse disclosed information about Kate's condition to two DJs who rang the hospital claiming to be the Queen and Prince Charles.
The Duchess of Cambridge is to spend another night in hospital being treated for acute morning sickness but is said to be feeling better.