Whitney Houston, a legend in the music industry and star of The Bodyguard, died today, reported the AP. No cause of death has been announced according to her publicist Kristin Foster, and mourning celebrities took to Twitter to express their grief towards the 48-year-old superstar.

R.I.P WHITNEY HOUSTON. ONE OF THE PUREST SOULS I'VE EVER MET IN MY LIFE, wrote rap star Ludacris.

Jesus Christ, not Whitney Houston. Greatest of all time, tweeted hip-hop sensation Nicki Minaj.

Celebrities young and old, both in the acting and music industries, shared their feelings in the social media spectrum. Some used the hashtag #iwillalwaysloveyou to commemorate the Grammy winner's memory.

#iwillalwaysloveyou is one of the most beautiful and iconic songs. It will be remembered forever. Rest in peace Whitney Houston, wrote Vampire Diaries actress Nina Dobrev.

God Bless The Dead. Whitney Houston R.I.P. She Was Only 48 Years Young, said filmmaker Spike Lee via Twitter.

Pop icon Mariah Carey, a long-time friend and collaborative partner of Houston's since the early 1990s, posted a string of tweets mourning the singer's untimely death. Carey and Houston recorded the popular single When You Believe for the 1998 Disney animated film The Prince of Egypt, and have both worked with music industry heavyweights Clive Davis and Tommy Mottola.

Heartbroken and in tears over the shocking death of my friend, the incomparable Ms. Whitney Houston, the singer tweeted.

Carey also expressed sympathy for those who knew Houston, and recognized her contribution to the music world.

My heartfelt condolences to Whitney's family and to all her millions of fans throughout the world, read on post from Carey.

She will never be forgotten as one of the greatest stars to grace this earth.

Television star Nick Cannon, Carey's husband, also paid his respects.

'To be absent from the body is to be present with the Lord.' R.I.P. to Whitney Houston, a true queen.