Happy Days," died Tuesday at the age of 81.



He died from complications of pneumonia, and his death was confirmed by Access Hollywood late Tuesday night.



His most recent movie, "Mother's Day," featured Julia Roberts, Jennifer Aniston, Kate Hudson, and more big stars that he had worked with many times before. He was also known for movies such as "The Princess Diaries," "Runaway Bride," "Beaches," and "Valentine's Day."



He will truly be missed in the film community, which is already evident by the countless celebrities that have taken to Twitter to mourn his passing.



Our thoughts are with his friends and family.