Co-stars Marlon (L) and Shawn Wayans (R), stars of the new comedy film Scary Movie 2, pose with their brother, director Keenen Ivory Wayans, at the film's premiere July 2, 2001 in Los Angeles. REUTERS/Rose Prouser

The Wayans brothers and Sony Pictures are developing a sequel to the 2004 comedy White Chicks, in which Marlon and Shawn Wayans will reprise their roles as sibling FBI agents posing as a pair of white women.

Keenen Ivory Wayans is on board to direct the sequel, which all three Wayans are writing. The plot of the new entry is being kept under wraps.

The first film was a surprise hit, grossing almost $70 million domestically; it was made for about $37 million.

The trio last worked together on Dance Flick, which they acted in, produced and co-wrote with family members Craig Wayans and Damien Dante Wayans.

Keenan Ivory Wayans' last directing project was 2006's Little Man. Marlon Wayans is on the big screen as Ripcord in the current release G.I. Joe: The Rise of Cobra.