The Doris Day Foundation reports her death at 97.
Doris Day passed away early this morning at her Carmel Valley home, having celebrated her 97th birthday on April 3 of this year. Nearly 300 fans gathered in Carmel last month to celebrate Day's birthday. Day had been in excellent physical health for her age, until recently contracting a serious case of pneumonia , resulting in her death. She was surrounded by a few close friends as she passed.
The BBC rounded up tributes:
Star Trek actor William Shatner remembered Day on Twitter as "the World's Sweetheart," saying she was "beloved by all".
Fellow Star Trek cast member George Takei said she was "synonymous with Hollywood icon", while Spanish actor Antonio Banderas wrote: "Thank you for your talent."
Novelist Paulo Coelho marked her passing by quoting lyrics from Secret Love, one of her numbers in Calamity Jane.
"We've lost another great Hollywood talent," tweeted Family Guy creator Seth MacFarlane, while actor Luke Evans said he had "always loved" her voice and "beautiful" songs.