Celebs are tweeting their reaction to the death of 32-year-old actress Brittany Murphy.

Ashton Kutcher, who co-starred with Murphy in 2003's 'Just Married,' tweeted, "2day the world lost a little piece of sunshine. My deepest condolences go out 2 Brittany's family, her husband, & her amazing mother Sharon ... see you on the other side kid."

Other celebs tweeted:

Jessica Simpson: "Brittany Murphy was an incredible ray of Light to so many people. Her smile was contagious. My prayers are with her family and loved ones."

Lindsay Lohan: "My deepest condolences go out to all of Brittany Murphy's loved ones & may she rest in peace....She was a great talent w/a beautiful soul xo."

Solange Knowles: "I can't. Not Brittany Murphy."

Joseph "Reverend Run" Simmons of Run DMC: "Cherish ur loved 1's..James 4:14 says, 'We're only here 4 a little while.' R.I.P Brittany Murphy."

Alyssa Milano: "Brittany Murphy and I did a USO Tour together in 2003. [heart graphic] She was a sweet soul, with a lot of talent and heart."

Eliza Dushku: "My heart aches having just learned of Brittany Murphy's death. We were friends time-to-time thru the yrs. I always admired her pure spirit. … Love & prayers."

Commenting directly to ET were 'Sin City' director Frank Miller and comedian Paul Rodriguez.

Miller told ET, "She's as sweet a soul as I've ever encountered. It's a major heartbreak."

Rodriguez said, "Brittany and I became friends after we met during my second USO visit to Iraq. We performed for more than 2,000 servicemen and women during a blackout on one of the hottest nights, it was about 130 degrees. Brittany sang 'Silent Night' and 'Let It Be' a cappella. As she sang, the room became completely silent -- all you could hear was her sweet voice. When she finished she said, 'Farewell, I will see ya'll back home someday.' They applauded and half of the crowd was in tears. Everyone there will never forget that night. Rest in peace sweet angel."