Claire Danes
A red carpet moment to remember! Posen and his design team illuminated the 2016 Met Gala with the Homeland star's glow-in-the-dark gown. It took more than 600 hours for the Cinderella-inspired work of art to come to fruition.
Sarah Jessica Parker
A match made in fashion Heaven! SJP has channeled her inner Carrie Bradshaw in plenty of Posen designs.
Naomi Campbell
During Posen's New York Fashion Week Fall 2015 runway show, the legendary catwalk queen made an epic finale entrance.
Katie Holmes
Not only have Zac and Katie developed a close-knit bond over the years, she also modeled a plethora of ZP originals for his fall 2018 collection. Talk about a true friend!
Princess Eugenie
Fit for a princess! The British royal enlisted Posen to design the dress she wore to her 2018 wedding reception.
Rihanna
Throughout the early days of her career, the Grammy winner often wore designs by Posen.
Uma Thurman
Zac's years-long friendship with the A-lister goes much deeper than the occasional fitting session. In fact, he cast Uma's daughter, rising starlet Maya Hawke, in his spring 2019 campaign. "I wanted to do a project with my friend who I'd watched grow up," Posen told The Cut at the time. "I wanted to capture this really special moment before her career took off."
Coco Rocha
At the height of both Zac and Coco's respective careers, you'd rarely find them far from each other.
Emily Ratajkowski
Pictured here at 2016 Emmys alongside the supermodel, Zac proves he's a total perfectionist.
Nina Dobrev
For what would be his fashion label's last Met Gala in 2019, Posen used 3D technology to create looks worn by Dobrev and more stars that night.