The 34-year-old suffered from Hyperemesis Gravidarum during her first two pregnancies and is also experiencing it with her third pregnancy.
“As with her previous two pregnancies, The Duchess is suffering from Hyperemesis Gravidarum. Her Royal Highness will no longer carry out her planned engagement at the Hornsey Road Children’s Centre in London today,” the statement said.
“The Duchess is being cared for at Kensington Palace.”
This article originally appeared on New Idea.