Barbara Windsor's died at the age of 83.
The actress - who had Alzheimer's - passed away last night with her husband by her side.
She was best known for her role as Peggy Mitchell in EastEnders and for her roles in the Carry On Films.
Fellow actors on the soap have reacted, with Danniella Westbrook tweeting "my heart is broken", while Steve McFadden says he's "devastated".
Her follow actors paid tribute to Dame Barbara, with Danniella Westbrook tweeting "my heart is broken", while Steve McFadden, who plays Phil Mitchell in EastEnders, said he is "devastated".
Comedian David Walliams said:
"Working with you, spending time with you, and being your friend was one of the greatest thrills of my life."
"You were the unofficial Queen of England, an icon for over half a century and treasured by the nation."