Michelle Trachtenberg, the iconic '90s Nickelodeon star of the TV series "The Adventures of Pete & Pete" and the movie "Harriet the Spy," has died at age 39 according to multiple reports. Page Six first reported the news that Trachtenberg,

On the page, the character of Harriet Welsch, the inquisitive and sharply judgmental preteen at the center of Louise Fitzhugh's novel "Harriet the Spy," is a little tough to take; her habit of writing down mean observations about her classmates is,

Trachtenberg starred as the cunning Georgina Sparks on the beloved CW series, appearing in each of the six seasons and reprising her role in the recent reboot.