A group of teenage girls staged a protest and runway show in New York City's Times Square Tuesday to challenge Teen Vogue magazine to publicly commit to using "Photoshop-free, diverse images of real girls."

Inspired by Seventeen Magazine's recent public pledge to not alter the faces of bodies of girls in the magazine, Carina Cruz and Emma Stydahar of the girl-fueled Spark Movement organized the protest, which took place in the heart of Manhattan. The impetus for Seventeen's declaration was an anti-Photoshop campaign led by their friend and fellow Spark member Julia Bluhm.

Holding signs and walking arm-in-arm, the girls marched near the offices of Teen Vogue and handed over a petition to the magazine with more than 20,000 signatures.

"When we saw how many supporters we actually had when we did the Seventeen petition, we really just wanted to start expanding and looking at the leader in fashion magazines right now, which is Teen Vogue," Cruz, 16, told Fox411.