Adam Yauch aka MCA of the Beastie Boys dead at 47: Celebrity reactions

Slideshow posted in Photos | Friday, May 04, 2012

9 of 20: Mandy Moore expressed her sadness over the loss using her Twitter account.

'sending energy and light to Adam Yauch's loved ones.....#RIPMCA,' she Tweeted.

(Pictured: Mandy Moore talks to OnTheRedCarpet.com at the 'Tangled' premiere.) (KABC Photo)