In which film did Michelle Trachtenberg have her first title role?

Michelle Trachtenberg (born October 11, 1985) is an American actress and model. Starting her career at a young age, she has played in a number of commercials, films, and television series. She is best known for her regular role as Dawn Summers in "Buffy the Vampire Slayer" (2000–2003) and recurring roles as Georgina Sparks in "Gossip Girl" (2007–2012), and Nona Mecklenberg in "The Adventures of Pete & Pete" (1994–1996), and for her role as Harriet M. Welsch in "Harriet the Spy! (1996).

Trachtenberg's film career began in 1996 with the title role in "Harriet the Spy", for which she had to leave "The Adventures of Pete & Pete" while its third season was running. She then starred in the short-lived television series "Meego", which garnered her a Young Artist Award. She returned to film in 1999 for "Inspector Gadget". She also starred in the film "Can't Be Heaven".

"Harriet the Spy" is an American coming-of-age comedy film directed by Bronwen Hughes in her directorial debut, and starring Michelle Trachtenberg in her feature film acting debut. It co-stars Rosie O'Donnell, J. Smith-Cameron, Gregory Smith, and Vanessa Lee Chester. Based on the 1964 novel of the same name by Louise Fitzhugh, the film follows a sixth-grade student who aspires to become a writer and spy.