tribute
The actor wrote a tribute to his "Grease" co-star, Olivia Newton-John, 73, after her death was reported on Monday.
Some 1,400 mourners gathered Wednesday to celebrate her life and accomplishments at Washington National Cathedral.
The singer dedicated her performance at Lollapalooza Brasil to the late Foo Fighters drummer. She said she'd spoken to him days before his death.
Messages of remembrance poured in after the Democratic giant from Nevada died at 82 after a years-long battle with cancer.
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Dwayne "The Rock" Johnson, Elijah Wood, Nathalie Emmanuel and Patricia Arquette led tributes to Halyna Hutchins.
The Oscar nominee, who appeared in "The Night Of" alongside Williams, praised his late co-star as a "rare talent" and "unique soul."
"We will miss him. But he will be here forever," Questlove wrote in an emotional statement about the iconic rapper.
"I will miss my Grandpa, but I know he would want us to get on with the job," the Duke of Cambridge said Monday.
Bryant Johnson's strong-armed gesture was fitting, given that he coached the late Supreme Court justice for more than 20 years.
"Our hearts feel empty without our friend, but we find comfort knowing that he is free at last."