Kate Middleton fans can win invites to her party
The Duchess will fly to the country in September with husband Prince William for a number of official engagements, taking in Kuala Lumpur and Sabah, Borneo.
In-between these royal duties she will throw the exclusive bash, for which Malaysians are being offered the chance to win tickets.
British High Commissioner Simon Featherstone said: "A love of tea drinking is something which Malaysian and British people share."
Entrants to the competition must send a photo of themselves drinking tea. The two best photos - one under 18 and one over 18 - will be chosen.
Prince William, 30, will also be attending the bash on Thursday 13th September.
Simon continued: "What better way to mark this very special royal occasion than by inviting everyone to join in the celebration and send in a photo which demonstrates their creativity."