The actress shared the news on micro-blogging site Twitter Monday, with a sketch of the outfit.
`My outfit sketch for Cannes 2014 by uber talented Indian designer Manish Tripathi,` she tweeted along with a sketch, which depicts a flowing white lehenga teamed with an elaborate and stylised blouse.
Mallika, who has been a regular at the Cannes International Film festival since the past few years, will inaugurate the CII (Confederation of Indian Industry) Pavilion during the gala later this month.
CII, for the twelfth consecutive year, will co-ordinate the participation of various Indian representatives at the Cannes Film Market May 14-23.
She will also be part of the inaugural session `Indian Cinema: Opportunities & Synergies with Global Cinema`, which will have speakers like Arun Kumar Singh (Indian ambassador to France) and Ashok Amritraj (Hollywood producer and chairman, CII Cannes Initiative).
Mallika, who has worked in films like `Murder` and `Pyaar Ke Side Effects`, is not the only Indian name who believes in promoting Indian designer on international red carpet events. Earlier, Sonam Kapoor also said that she makes sure to add an Indian element to her look whenever she travels abroad.