Posh will appear as the face of the exclusive fashion brand, and her duties will include a nationwide publicity campaign. Voyage, currently a store in London, is famed for its exclusivity.
Customers wishing to even look around the store have to apply for membership.
Naomi Campbell was famously banned from the store after a tantrum when she was not admitted to the store as quickly as she would have wished. Madonna, Mick Jagger and Nicole Kidman are all current members.