Do the Jonas Brothers have a sister?

Related questions

1. Why did Nick cause the Jonas Brothers to break up?
2. Are Sophie Turner and Joe Jonas still engaged?
3. Are Jonas Brothers coming back?
4. Why did the Jonas Brothers Break Up in 2013?
5. Is Nick Jonas The youngest brother?
6. Why did Nick split up Jonas Brothers?
7. What happened to the Jonas Brothers?
8. Why is cake by the ocean dirty?
9. Are Kevin and Danielle Jonas still married?
10. What does eating the cake mean?

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18. #garza
19. #gemma