The Four Weddings sequel will air in the UK on BBC1 on 15 March 2019 and in the US on NBC in May.
Four Weddings and a Funeral was released in 1994 and is the film which catapulted Curtis and its star, Hugh Grant, to international fame.
Hugh Grant, Andie MacDowell, Kristin Scott Thomas and Rowan Atkinson are among the stars confirmed to take part in a short Four Weddings and a Funeral sequel to be screened in the UK on Red Nose Day 2019.
Made on a budget of £3m, Four Weddings and a Funeral took £193m at the box office and Oscar nominations for best picture and best original screenplay.