Inside Chris Pratt Katherine Schwarzenegger's star-studded Wedding. The guests, the tears and exclusive details you won?t hear anywhere else.

Plus, take a listen to Jennifer Lopez and her emotional duet with her daughter. Only ET?s backstage for her tour with details every fan should know.

Then, behind the scenes for Celine Dion?s Las Vegas farewell and breaking news on her next big project.

And, our ?The Hills: New Beginnings Week? kicks off with new interviews with Heidi Montag and Spencer Pratt.

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