The launch of The Jay Leno Show is going to be a big one and we don’t mean Leno himself - who has dropped 12 lbs recently.

Guests including Rihanna, Jay-Z and Kanye West will all appear on the episode to kick off the brand new program.

The popular R&B singers will perform “Run This Town” from Jay-Z’s newest album, “The Blueprint 3.”

This will be one of Rihanna’s first huge performances since the public breakup and assault that happened back in February with ex-boyfriend Chris Brown, whose sentencing has been rescheduled for August 27.

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