It's a sad day today in Hollywood as "Green Mile" actor Michael Clarke Duncan, 54, has died.

TMZ first broke the sad news today regarding the death of Michael Clarke Duncan, an extremely beloved actor in Hollywood. Celebrities took on Twitter to express their deepest condolences regarding the tragic death of Duncan.

Let's take a look below at a few of the celebrity reactions on Twitter concerning Michael Clarke Duncan's passing:

Rosario Dawson ‏@rosariodawson

"oh no! Michael Clark Duncan was such a lovely sweetheart! Too young!"

Russell Simmons ‏@UncleRUSH

"RIP Michael Clarke Duncan..."

Reggie Bush ‏@reggie_bush

"RT @UncleRUSH: RIP Michael Clarke Duncan.."

Michael Strahan ‏@michaelstrahan

"RIP to my friend Michael Clarke Duncan. A kind and gentle Giant. A friend that will be missed!! #prayers"

Kristin Kreuk ‏@MsKristinKreuk

"Michael Clarke Duncan was just the most gentle, kind giant of a man. He will be missed. Prayers to his family and loved ones. RIP"

Wendy Williams ‏@WendyWilliams

"Rest in peace Michael Clarke Duncan."

Mario Lopez ‏@MarioLopezExtra

"R.I.P Michael Clarke Duncan... One of the nicest & most professional guys I've had the pleasure of knowing. So sad... #ClassAct"

Michael Chiklis ‏@MichaelChiklis

"R.I.P. Michael Clarke Duncan. :.("

Phillip Phillips ‏@Phillips

"R.I.P. Michael Clarke Duncan.....loved his acting. Prayers go out to the family and friends"

R.I.P Michael Clarke Dunkan

Feel free to comment and share this blog post if you find it interesting!