Beyonce Knowles has had it all before turning 30, yet is still humbled by what she calls “the biggest opportunity of my life” – the lead role in Clint Eastwood's remake of the film, “A Star Is Born.” The singer and burgeoning actress, whose fourth solo album “4” debuted at No. 1 on pop charts after its release in June, told Reuters she felt lucky to have landed the iconic role previously played by Barbra Streisand and Judy Garland. Eastwood will helm the fourth remake of the story about rising singer and actress Esther Blodgett, and Beyonce fondly remembers being a young girl and watching previous versions of the movie with her mother. “It's when I became a fan of Barbra Streisand's. And I then saw Judy Garland's version of ‘A Star Is Born' and I realized every 20 to 30 years a new star is born and a new talent represents that generation and era – so I didn't think that I would ever get the opportunity to be the star,” she said. Beyonce has won 16 Grammy Awards, is married to rapper mogul Jay-Z, has topped Forbes magazine's lists of the most powerful and influential celebrities and is one of the world's top