La Tante Claire was a London restaurant which opened in 1977 and closed in 2004. It was owned and run by the French-born chef Pierre Koffmann, and had three Michelin stars between 1983 and 1998.
During the period in which The Line of Beauty is set, La Tante Claire was located on the Royal Hospital Road in Chelsea. It re-located to the Berkeley Hotel, Knightsbridge in 1998.
Pierre Koffmann produced a recipe book entitled La Tante Claire: Recipes From a Master Chef, which was published in 1993 (a section of which may be seen below).