Cute new couple Joe Jonas and Demi Lovato didn't just make a splash during their duet on last night's "American Idol," they made a "Wave." The beloved-by-tweens duo belted out their new tune "Make a Wave" together on the show and both seemed quite pleased with how it all went. Joe wrote to fans this morning, "Thanks to everyone who watched American Idol last night! @ddlovato and I had a great time. Demi posted, "What an incredible day... Thanks to everyone who tuned in to American Idol tonight!!! 
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If Demi's dream is to be killed on an episode of "South Park" she's simply going to have to play second fiddle to the Kardashian sisters, as Kim, Khloe, and Kourtney all reached their untimely end during last night's episode. But, it seems the "Keeping Up With the Kardashians" stars got quite a kick out of their animated demise. Kim tweeted, "Did anyone see SouthPark yesterday? Kourtney, Khloe and I got killed! LOL." Khloe also had a good sense of humor about the whole thing, "AMAAAAAAZING!!!!!! http://bit.ly/apiLe0 I seriously died! No pun intended LOL."
Check out the rest of today's best celebrity tweets, including John Cusack trying to unravel the Twitter trending topic mystery that is Justin Bieber, while Trace Cyrus confirms the end of his band! Follow us @hollywoodcrush to get even more celebrity and pop culture news around the clock!
@danielcudmore Two big Tony Robins sized banana handed thumbs up to everyone who bought the New Moon DVD!!!!
-Daniel Cudmore, Actor ("New Moon," "Eclipse")
@katharinemcphee Todays my birthday!! Woohoo!
-Katharine McPhee, Singer, Actress ("The House Bunny")
@tarajiphenson HAPPY HAPPY TIPPY TAPPY THURSDAY!!! HA!....I know y'all are like "why is she so damn happy?!" My response "WHY NOT?!"
-Taraji P. Henson, Actress ("Date Night," "The Curious Case of Benjamin Button")
@jasoncastro I had my annual mickey mouse pancakes this morning but to it to the next level with nutella and fruit!! Mmm mmm
-Jason Castro, Musician
@djpaulyd A Lil GTL Today Only This Time Its Gym, Tanning , Lunch .... Cuzz Im Starving !!!!
-DJ Pauly Delvecchio, Reality Star ("Jersey Shore")
@shockozulu what is this strange power the beiber exudes? why so sure he can't be conquered-- why are there stories of the beiber blow drying his hair?
-John Cusack, Actor ("Hot Tub Time Machine," "2012")
@dan_benson Going to see John Mayer tonight! Im so excited!
-Dan Benson, Actor ("Wizards of Waverly Place")
@ashbenzo Seeing @johncmayer tonight
-Ashley Benson, Actress ("Pretty Little Liars," "Eastwick")
@tracecyrus The rumors are true. Unfortunetly Metro Station is no longer together. We had an amazing run, toured the world, and I loved every minute.
-Trace Cyrus, Musician
@jumblejim Pouring rain for my last Supernatural scene today--seems fitting
-Jim Beaver, Actor ("Supernatural")
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