LONDON -- The Duchess of Cambridge has left a London hospital where she was being treated for acute morning sickness related to her pregnancy.
The former Kate Middleton smiled as she left the King Edward VII Hospital Thursday alongside her husband, Prince William.
The couple's office said she would head to Kensington Palace in London for a period of rest.
Royal officials have said Kate is less than 12 weeks pregnant with her first child.
She was admitted Monday after developing the condition known as hyperemesis gravidarum, and was suffering from the effects of dehydration.
For medical staff to allow Kate to go home, her severe vomiting must be under control and they are likely to have given her anti-sickness medication, say royal family watchers.