She featured in many commercials, after which she made her acting debut in the 1999 film The Secret Life of Girls, starring Eugene Levy and Linda Hamilton.
The same year, she co-starred with Glenn Close in the Hallmark Classic television film Sarah, Plain and Tall: Winter's End, a role that would lead a Young Artist Award nomination.
She also did the role of Tara Sparkler in Goosebumps.
Osment made her film debut in 2002 as Gerti Giggles in Spy Kids 2: The Island of Lost Dreams, a role for which she won the Young Artist Award for Best Performance in a Feature Film.
She also had a voice over role in a movie called Holidaze: The Christmas That Almost Didn't Happen.
She performed several songs for the movie, including "Don't Ya Just Love Christmas" and "One Day".
Emily performed several songs for the film, including "Don't Ya Just Love Christmas" and "One Day". Osment also recorded a remake version of the song "If I Didn't Have You" with Mitchel Musso for the Disney Mania 6 CD. The two also filmed a music video for their remake.
The parade featured acts like Miley Cyrus and the High School Musical cast.
She and Musso performed a sketch based on a Hannah Montana episode. It earned her a Young Artist Award nomination in 2008 for "Best Performance in a TV Movie, Miniseries or Special Leading Young Actress".
Released in late 2010, Fight or Flight is the debut studio album by Emily Osment under Wind-up Records. Emily Osment does some workout to keep herself fit. Emily doesn’t hesitate into eating for what she craves for. Regarding workout, Emily loves playing golf, soccer, and tennis.
She would go for hiking and biking in the company of her friends.
Emily sings the chorus of the song Billy Ray Cyrus "You've Got a Friend", from his album 2007 Home at Last.