Back of The Future Jonas Sister-in-Law Fits Right in With the Boys The Jonas Brothers had more than just America to celebrate this weekend, and the boys kicked things off with an engagement party for Kevin on Friday night. Kevin couldn't hide his grin as he led his new fiance Danielle Deleasa by the hand out of a pizza parlor in LA. On Sunday the boys were back to work, playing their hearts out on stage at a show in Canada. Kevin's life is about to get even more hectic with a wedding to plan, but now he's got a permanent number-one fan in the audience. View 15 Photos › Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 More of the Jonas Brothers so just . View 15 Photos › Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 Photo 6 Photo 7 Photo 8 Photo 9 Photo 10 Photo 11 Photo 12 Photo 13 Photo 14 Photo 15 Image Sources: INFphoto.com and Getty Comments xoxokelseylovexo 8 years you guys probably dont care. but they are famous for thier music and veryy good looks. they played with stevie wonder at the grammys. they have done a lot in such a short time. read up people your going to be seeing more of them. MacDre 8 years I didn't even know he had a girlfriend -- I thought he was gay! I love her shoes though. :love: Darkpasion452 8 years I have absolutely no idea why they are so popular ? _ i guess......mmmm......No idea ilanac13 8 years i've never been a fan - so i guess as long as they are happy right? Nyrina-Windu 8 years You're not alone, because I just don't get it either.