When Miley Cyrus sat down for an interview with MTV, they asked her if the Jonas Brothers would be joining the show on her Wonder World Tour. At first she said “I don’t know” and then she went on to say that the show doesn’t have any room for guest appearances. She said, “I don’t know. I went and saw the Jonas’ show and it was cool being able to go to a Jonas Brothers’ concert. It was super fun.”
Miley went on to say, “We don’t have time for any guest appearances or anything. I think a lot of my friends will be able to come and visit. You know, the problem is a lot of my buddies are busy working too, but I hope they all can at least catch a show. That’d be really great. It was cool to be able to see the [Jonas Brothers'] show and I hope they’ll be able to come here.”
I think this needs to be purely Miley’s gig anyway. She has promised this tour will be completely different from her Best of Both Worlds tour and this is her moment to shine as just Miley Cyrus. No Hannah Montana and no Jonas Brothers! source.