Lengies was born in Montreal, Quebec, Canada, to a German father and an Egyptian mother.

[citation needed] Lengies got her start in Canadian television on shows such as Sponk!, Are You Afraid of the Dark?, Radio Active, and Popular Mechanics for Kids.

In 2002, she was cast as a series regular in the NBC comedy-drama American Dreams, playing teenager Roxanne Bojarski.

For The Grudge 2, the role of Vanessa was originally written for Lengies, who eventually turned it down to film My Suicide; the part still bears her name.

The show, which ran for three seasons of ten episodes starting each June, was not renewed for a fourth summer.

[citation needed] She was cast as Kacey, a bubbly cocktail waitress, in the sitcom Mixology.

[6][7] Since then, Sugar's singing has greatly improved, and she now performs with the main glee club, New Directions; she had her first solo line in the season's tenth episode, "Yes/No".

[9] Sugar's debut was praised by Salon's Matt Zoller Seitz, who said of the new addition to McKinley, "She's awful.

Club's Emily VanDerWerff concurred, and said of "I Am Unicorn", "Sugar continues to be one of my least favorite new characters in ages".