Since then, Osnes has proven that she's here to stay, taking center stage in Broadway classics like South Pacific and Anything Goes and belting through Frank Wildhorn's pop musical Bonnie & Clyde.
The young actress, who will play Maria in the Carnegie Hall concert staging of The Sound of Music April 24, is also preparing to star in a new Broadway production of Rodgers and Hammerstein's Cinderella, which will give the classic a fresh twist during the 2012-13 season.
Playbill.com has gathered a handful of videos highlighting Osnes' career on stage so far.
Osnes and Colin Donnell sing "It's De-Lovely" from Anything Goes at Broadway in Bryant Park.
"How 'Bout A Dance?" from the Broadway musical Bonnie & Clyde.
Duetting with Melissa van der Schyff on "You Love Who You Love" from Bonnie & Clyde.
"I'm In Love With A Wonderful Guy" from South Pacific as part of Sirius XM Live On Broadway.
Her performance during the finale of "Grease: You're the One That What I Want."
Singing "Doctor, Lawyer, Indian Chief" from Catch Me If You Can at the After Party.
Laura Osnes performing the Kooman and Dimond song "Breath" from the short film "Flour Baby."
Osnes' original audition for "Grease: You're the One That I Want."
Playbill.com's coverage of the Pipe Dream media day.