In 2001 Zac Posen showcased his designs at his first fashion show, his designs were recognized by buyers from Henri Bendel, where they began selling Posen’s dresses. He then founded his own company, Outspoke, and debuted his ready to wear collection in 2002. Posen’s label quickly gained attraction from celebrities such as Ariana Grande and Natalie Portman. Grande famously wore a couture Cinderella dress for the 2019 Grammy’s designed by Zac Posen, that went viral on social media. He ended his label that same year and kept his position as creative Director of Womenswear at Brook’s Brother’s until 2014. He is now a judge on the TV show Project Runway.