News Bites: Ludacris, Keyshia Cole, Karrine Steffans, Rihanna, Yung Joc

Ludacris on performing at this weekend’s Live Earth concert and reuniting with Chingy. Full story.

Keyshia Cole shoots “Let It Go” video with Lil’ Kim and Missy; readies new album Just Like You for August release. Full story.

Video vixen Karrine Steffans airs out her sexual encounters with Ne-Yo and Lil’ Wayne in new book. Full story.

Rihanna’s “Umbrella” continues to top The Billboard Hot 100 for the fifth week in a row. Full story.

Yung Joc previews his new album Hustlenomics (August 28). Full story.