"Extra" was along for the ride as Nick, Kevin and Joe crossed the country to promote the opening of their new flick, "Jonas Brothers: The 3-D Concert Experience" -- and we got a glimpse into their personal lives. Plus, check out the video for more raw moments with the brothers!

Watch Kylie Jenner's Amazing Pregnancy Video Diary
Kylie Jenner decided to keep her pregnancy to herself, but now that her "healthy baby girl" is here, she has released a long…
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