06/12/2012 07:35 GMT | Updated 22/05/2015 06:12 BST

Smiling Duchess Of Cambridge Leaves Hospital With Prince William By Her Side

With a nod and a smile, the Duchess of Cambridge left hospital this morning after treatment for severe morning sickness.

Kate's husband Prince William was by her side as she left King Edward VII hospital in central London.

Smiling Duchess of Cambridge leaves hospital with Prince William by her side PA

She was admitted on Monday with acute morning sickness - hyperemesis gravidarum.

When asked by a reporter if she was feeling better, the Duchess nodded and smiled, before getting into an awaiting car to be taken to Kensington Palce where she is expected to rest.

Onlookers noticed that the Duchess, who is believed to be under 12 weeks pregnant, looked wan and her face was slightly swollen.