WATCH: Celine Dion, Bob Mackie, Usher and Chris Brown: Here’s what’s trending

ABC News’ Rocsi Diaz takes a look at what’s buzzing in pop culture, including Dion performing her first full concert in six years and Hollywood losing the man who taught it how to sparkle.

​ABC News’ Rocsi Diaz takes a look at what’s buzzing in pop culture, including Dion performing her first full concert in six years and Hollywood losing the man who taught it how to sparkle.  Entertainment ABC News’ Rocsi Diaz takes a look at what’s buzzing in pop culture, including Dion performing her first full concert in six years and Hollywood losing the man who taught it how to sparkle.