Joe Jonas is having a ton of success with his solo gig, but fans got a treat when his big brother Kevin jumped onstage at his concert last week at the Best Buy Theatre in New York City -- and they played some classics. The crowd went nuts. They performed a medley of Jonas Brothers hits together, and both of them looked thrilled to be sharing the stage again!But is she really in love? "Teen Mom" star Leah Messer sure is trying to rub it in her ex-husband Corey Simm's face that she's crazy about her new boyfriend Jeremy Calvert. Here's what she did! Since starting their relationship about three months ago, she has been lovingly tweeting Jeremy nonstop. Is Leah trying to make it a point to Corey that she's extremely happy? "The girls and I don't know what we would do without @calvert505 in our lives!" Leah tweeted last week. "I can't wait until this weekend babahh!" Earlier in the week, Leah revealed that she and Jeremy are planning on taking her 20-month-old twin daughters Aliannah and Aleeah to a fall festival.

What did you think of the checkered frock Kim Kardashian wore on the "Today" show last week? Go to hollywoodlife

.com and let us know.

Get the latest news and more great videos at NewsdayTV Credit: Newsday

Visiting Christmasland in Deer Park ... LI Works: Model trains ... Get the latest news and more great videos at NewsdayTV

SUBSCRIBE

Unlimited Digital AccessOnly 25¢for 6 months

ACT NOWSALE ENDS SOON | CANCEL ANYTIME