Daniel Radcliffe, Emma Watson, Bonnie Wright and more paid tribute today to their 'Harry Potter' costar Maggie Smith, who died Sept. 27.

The British actor, known for her portrayal of Professor Minerva McGonagall in the "Harry Potter" movies, died Sept. 27.

On Friday, Daniel Radcliffe shared a sweet tribute for Maggie Smith, who died earlier in the day at age 89. The actors appeared together in the Harry Potter films, in which Smith played Professor McGonagall.

Daniel Radcliffe recounted the first time he saw Dame Maggie Smith, his co-star in David Copperfield, when he was just nine years old.

Daniel Radcliffe paid tribute today to his Harry Potter costar Maggie Smith, who died this morning at the age of 89. The two actors actually met on a job prior to the Potter franchise, when both were cast in a 1999 BBC adaptation of David Copperfield.

Daniel Radcliffe, Emma Watson and more members of the Harry Potter cast are mourning costar Dame Maggie Smith, who died at age 89 on Friday. While audiences remember Radcliffe, now 35, as The Boy Who Lived and Smith as Professor Minerva McGonagall in the eight-film series,

"I feel incredibly lucky to have shared a set with her and particularly lucky to have shared a dance." Rupert Grint is grieving the loss of Dame Maggie Smith but remembering her fondly. In an Instagram post Saturday,

Daniel Radcliffe is paying tribute to the late Maggie Smith, who died at 89 years old. The two actors are veterans of the “Harry Potter” film franchise. Radcliffe starred in the title role of all eight movies,

Beloved British actor Maggie Smith, who stole hearts in her portrayal of Downton Abbey’s Violet Crawley and Harry Potter’s Professor Minerva McGonagall, died on the morning of Friday, Sept. 27, at the age of 89.

Tributes quickly began to pour in after the death of "Downton Abbey" and "Harry Potter" actress Maggie Smith. Smith died "peacefully" in her sleep Friday.