Celebrities mourn David Bowie's death at 69 and remember his groundbreaking career
He had celebrated his 69th birthday on January 8, as well as the release of his newest album, "Blackstar."
Celebrities, musicians, and some other high-profile people took to Twitter to remember the performer and offer condolences to his family. Here are some of their reactions, from Kanye West to Ricky Gervais, below: