Taylor Lautner was born on February 11, 1992. The movie The Twilight Saga: New Moon was released in 2009, and filming took place around 2008-2009. Lautner was about 17 years old during the filming of New Moon

. He originally played Jacob Black as a younger, scrawny character in the first Twilight movie but had to re-audition for New Moon after the producers considered recasting the role with an older, more muscular actor. Lautner then gained significant muscle mass by working out intensely for about nine months to win back the role, transforming Jacob into a more physically mature character in New Moon. This physical transformation and Lautner's age of approximately 17 at the time contributed to his breakout popularity as a teen idol

. In summary, Taylor Lautner was around 17 years old during the filming and release of New Moon.