For 10-year-old Mackenzie Foy, the road from commercial actress to vampire-human love child was a short one. After starting her career in national television and print spots for such clients as Ralph Lauren, Mattel and Burger King, the future “Twilight” star landed a role on the Fox sitcom ” ‘Til Death” in 2009. Since then, she has made guest appearances on ABC’s “FlashForward” and CBS’s “Hawaii Five-0.” But her upcoming role as Edward and Bella’s spawn in “The Twilight Saga: Breaking Dawn” pushes Foy into a very high-profile spotlight for her silver screen debut. Though director Bill Condon (“Dreamgirls”) has a solution up his sleeve to smooth fans’ issues with the controversial character, Renesmee remains an unusually fast-growing infant, which explains how she will come be played by an actress Foy’s age, most likely in the second installment of the two-part finale. “We have found in Mackenzie all of the qualities we were looking for in an actress to fill the role of Renesmee,” says “Twilight” producer Wyck Godfrey. “She is a very talented young actress who emerged head and shoulders above all who auditioned for the part, and we can’t wait to see what she brings to her role.