The Duchess wrote three letters to Fabian Bate, who she and Prince William first met at the Royal Marsden hospital.
The Duke and Duchess of Cambridge are headed to the US for a series of official engagements.
One Direction were left tongue-tied as they met the Duke and Duchess of Cambridge at The Royal Variety Performance.
The Duke and Duchess of Cambridge looked thrilled to be at the star-studded event.
Life & Style magazine is claiming that Kate Middleton is expecting a baby girl.
Three-year-old slice of royal cake from Prince William and Kate Middleton's wedding will be auctioned in California.
The Duchess of Cambridge met with young athletes at the GSK Human Performance Lab in Essex.
Kate Middleton showed off her growing baby bump while visiting the Valero Pembroke Refinery.
Magazine claims Prince Harry kissed mysterious woman in London bar.
It's the first time the younger royals have been elected to attend the star-studded Royal Variety Performance.
Mystery over how 38-year-old's body became impaled on spikes near Kensington Palace in west London.
Investigators launch probe after dead body found at Kensington Church Walk
The Duchess was attending the Autumn Gala dinner on behalf of charity Action on Addiction.
Pippa Middleton's boyfriend Nico Jackson has moved to Geneva, Switzerland for work.
It was the second public appearance for the Duchess, who is pregnant with her second child.
Kate Middleton resumes royal duties after two months of acute morning sickness.
Kate Middleton's family has not been included in the guest list.
Sibling for Prince George expected next April, the Duke and Duchess of Cambridge have announced.
Kate Middleton is trying to find out who has been leaking her family's secrets to the press.
Harry was disappointed after being seated between two men at 100 Women in Hedge Funds Philanthropic dinner.
Kate Middleton has been suffering from a severe form of morning sickness - hyperemesis gravidarum.
Kate Middleton has been suffering from a severe form of morning sickness - hyperemesis gravidarum.