The likes of Harry Styles and Katy Perry have paid tribute to Robin Williams after he was found dead.

The 63-year-old comic legend died on Monday (August 11) in a suspected suicide.

The actor - who appeared in films such as Dead Poets Society and Good Will Hunting - had been "battling severe depression", a rep said.

The entertainment world has been left in shock and a number of music stars have taken to Twitter to express their sadness.

Harry Styles wrote: "One of my all time favourites. Movies I grew up watching over and over again. A genius that will be so missed. R.I.P. Robin Williams."

Katy Perry said: "So sad about Robin Williams..."

Miley Cyrus commented: "I can't take the Robin Williams news. I've never cried over someone I've never met but I can't stop."

Taylor Swift wrote: "Heartbroken for Robin Williams and his family."

Cher meanwhile said online: "I was with him a little while ago we pretended to see Sharknados! Have known him Long X. Saw him open 4 Martin Mull once, Pre Mork & Mindy."

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Watch Robin Williams in action below: