You Won’t Believe the Mistakes These Celebs Made in their Careers

13. Gillian Anderson

While most people in the U.S. know her for her role in X-Files she has continued to have a very successful career in Europe. It could have been even more successful had she taken the role of Lady Cora Crawley in Downton Abbey. But that was not the only big role she turned down. Gillian also refused a role in Game of Thrones due to scheduling issues.