Audrey Hepburn was born on May 4, 1929. The movie "War and Peace," directed by King Vidor, was released in 1956. Therefore, Audrey Hepburn was 27 years old at the time of the film's release. In the movie, she plays the character Natasha Rostova.

The best filmed version of "War and Peace" is often considered to be the 1956 adaptation directed by King Vidor. This epic film stars Audrey Hepburn as Natasha Rostova and includes stunning cinematography and grand battle scenes. It captures the essence of Leo Tolstoy's novel, portraying the lives of Russian aristocrats during the Napoleonic Wars. Another notable adaptation is the 1972 Soviet miniseries directed by Sergei Bondarchuk, which is acclaimed for its authenticity and depth, winning an Academy Award for Best Foreign Language Film.

There are several film adaptations of Leo Tolstoy's "War and Peace." The most notable ones include: 1. **1956 Version**: A Hollywood adaptation directed by King Vidor, featuring Audrey Hepburn. 2. **1972-1973 Soviet Version**: A comprehensive miniseries directed by Sergei Bondarchuk, acclaimed for its faithfulness to the novel. 3. **2007 TV Miniseries**: A Russian adaptation that aired in four parts. Additionally, there are other adaptations, including animated versions and international films, but these three are the most prominent.

The 1956 film "War and Peace," directed by King Vidor, has a runtime of about 208 minutes, which is approximately 3.5 hours, not 7 hours. However, there is a 1972 Soviet adaptation directed by Sergei Bondarchuk, which is often noted for its epic length and can total around 7 hours when considering all parts. This version is divided into four parts and is known for its grand scale and detailed portrayal of Leo Tolstoy's novel.