Nick Jonas is not of legal age to do a lot of things -- and one of them is perform on "Jimmy Kimmel Live" without his parents' approval.
When the Jonas Bros. appeared on the show back in March, Nick had to get his dad's signature on a parental consent form. Since Joe and Kevin are over 18, they were alright without it.
BTW -- Nick got $777.33 for the performance.
Jonas & Kimmel
Parental Guidance Required
6/22/2009 3:00 AM PDT BY TMZ STAFF
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