Hollywood reacts to Glen Campbell's death at 81 following Alzheimer's battle

Hollywood is mourning the loss of Glen Campbell following his death at 81.

The country legend passed away on Tuesday morning at a Nashville care facility following a years-long battle with Alzheimer's.

Campbell, known for hits such as "Rhinestone Cowboy" and "Country Boy," amassed numerous accolades throughout his career. He released more than 70 albums, sold over 45 million records, was inducted into the Country Music Hall of Fame and won 10 Grammy Awards and 10 Academy of Country Music Awards.

Country's biggest stars -- from Blake Shelton to Brad Paisley -- have expressed their condolences on Twitter. Campbell's daughter, Ashley, also posted a heartbreaking message alongside a photo with her father.

"Heartbroken. I owe him everything I am, and everything I ever will be. He will be remembered so well and with so much love," Campbell wrote with a photo in which she holds her father's hand.

See the heartfelt tributes from other stars in the slideshow above.