Some might say that Kate Hudson was always destined for fame, thanks to her high-wattage heritage (the daughter of Goldie Hawn and musician Bill Hudson, she was raised by Hawn and Kurt Russell) -- but you wouldn't know it to look at her unassuming high school photo.
With the braces and '90s fashion behind her (would she have been considered a "gleek" had she enrolled at McKinley High?), Hudson will bask in the spotlight on "Glee" this season, playing the intimidating dance instructor who is set to whip Rachel Berry into shape at NYADA. As Cassandra July, Hudson has already demonstrated that she's got serious moves, and her first appearance hasn't even aired yet.
In honor of "Glee's" Season 4 premiere (Thurs., Sept. 13 at 9 p.m. ET on Fox), Snakkle.com has rounded up an eye-opening collection of photos that feature the show's A-list guest stars before they were famous, including Britney Spears, Gwyneth Paltrow, Jeff Goldblum, Lindsay Lohan, Nene Leakes, Ricky Martin and Gloria Estefan. Click here to see the full gallery.