NEW YORK: With three box office hits earning $1.17 billion at the US box office over the past three years, Kristen Stewart and Robert Pattinson are Hollywood's highest-grossing romantic film couple.

The stars of the “Twilight” vampire films easily surpassed all other film twosomes in the Forbes list that looked at the top 10 grossing romantic films of the last three years.

“There is something unique about these films in the way that people have attached themselves to them,” said Dorothy Pomerantz of Forbes.com.

“The movies are unconventional, and you have the added element that the two people are a couple in real life,” she added.

Stewart and Pattinson's off-screen romance and breakup following Stewart's affair with Rupert Sanders, the married director of her film “Snow White and the Huntsman,” fueled interest in the couple, who reportedly reunited ahead of the release of the final film in the popular “Twilight” series based on the novels by Stephenie Meyer.

Forbes compiled the list by looking at the top-grossing romantic films in the United States in the past three years as classified by Box Office Mojo. They added the totals for each couple's US box office.

The last three films in the “Twilight” series, “Eclipse,” “The Twilight Saga: Breaking Dawn - Part 1” and “The Twilight Saga: Breaking Dawn - Part 2,” were included in the box office calculations.