Betty White "died peacefully in her sleep at her home" on New Year's Eve at age 99, her agent and longtime friend Jeff Witjas previously told PEOPLE Betty White's cause of death has been revealed.

Betty White "died peacefully in her sleep at her home" on New Year's Eve at age 99, her agent and longtime friend Jeff Witjas previously told PEOPLE Liz McNeil is an Editor at Large at PEOPLE ...

Legendary TV icon Betty White will be honored in March with a stamp, the U.S. Postal Service announced. The "Golden Girls" and "Mary Tyler Moore Show" actor "shared her wit and warmth with viewers ...