John (pictured with his sisters Joan and Ann) is the richest of the clan, with an estimated $50 million (£37.2m) to his name. He began acting in the 1980s and has taken on a diverse range of roles over the years, with his filmography including everything from the iconic teen rom-com Sixteen Candles to the spine-tingling horror hit 1408.

Meanwhile, Joan and Ann each have an estimated $20 million (£14.9m) net worth. Joan is best known as the voice of the kooky cowgirl Jessie in the beloved Toy Story franchise, while her on-screen roles include the comedy classic School of Rock and the Showtime series Shameless.

Ann shot to fame in the 1992 sports drama A League of Their Own and has also graced the small screen in Grey's Anatomy and Scandal.

Susie and Bill's fortunes, on the other hand, are more ambiguous. Bill Cusack has appeared in 21 movies, including the action-packed blockbuster Con Air, while Susie has only graced the screen in six projects, with her last role back in 2003.

Even without factoring in Susie and Bill's wealth, this showbiz dynasty is still worth a juicy $90 million (£67m).

The richest Hollywood dynasties, ranked