Malmesbury and Gien have been twin towns since 1999.
The Malmesbury and District Twinning Association is hosting the celebratory supper on Friday, October 10 at the town hall, from 7pm to 9.30pm.
Diners can expect a menu of tomato tart, courgette loaf and cassoulet, with both chicken and vegetarian options available on the menu. For dessert, there will be profiteroles and fruit.
There will be a bar and a raffle.
To purchase tickets, at £20, email MalmesburyTwinning@gmail.com or go to the Tourist Information Centre.
Dining and Cooking