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'Project Runway' judge Michael Kors replaced by Zac Posen

Barbara Nitke / Lifetime

Zac Posen is joining season 11 of "Project Runway."

One day you're in, the next day you're out, "Project Runway" host and judge Heidi Klum says on the popular fashion competition show. And now the same can be said of judge Michael Kors, who has been with the show for 10 seasons. 

Lifetime said in a statement that the designer would not be back for season 11 to sit alongside fellow judges Klum and Nina Garcia. "Due to the back-to-back film schedule for seasons 10 and seasons 11 this summer, Michael was not able to commit to all the dates required for filming season 11," the network explained. "Always part of the 'Project Runway' family, Michael will be seen in the future on the show and we are excited to confirm that Michael will be back as a judge for season 11 finale."

"Love you and the @ProjectRunway family!" Kors tweeted to Klum Tuesday. 

Replacing Kors on the judging panel is designer Zac Posen. "I have a pretty big seat to fill @MichaelKors. So honored! #ProjectRunway" he tweeted after the news was revealed.

The change in judges isn't the only tweak to the long-running show. Lifetime also revealed that season 11 will feature a big twist: There won't be any individual challenges.

"The designers must work together for every challenge while ensuring their own garments stand out on the runway," the network said.

"Project Runway" season 11 premieres Jan. 24 at 9 p.m. on Lifetime.

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