Following the hospitalization of his beloved girlfriend on Thursday night, June 9, the 'Baby' singing sensation tweets a '#getwellselena' hashtag on his account.After learning that his girfriend Selena Gomez is being hospitalized, Justin Bieber tweeted a "get well" wishes to her. Posting a short, yet simple message to the Disney darling, the Canadian teen heartthrob wrote "#getwellselena" on his Twitter account. The hashtag soon became a trending topic on the micro-blogging site.

The "Wizards of Waverly Place" star was rushed to a Los Angeles area hospital right after taping an interview for "The Tonight Show with Jay Leno" on Thursday night, June 9. "Last night after Selena's appearance on 'The Tonight Show' she wasn't feeling well and was taken to the hospital. She is currently undergoing routine tests," the "Monte Carlo" actress' rep explained.

The cause of her illness is not yet revealed. However, a source revealed to TMZ that "Gomez was feeling horrible during and after the show, complaining of nausea and a severe headache." She's expected to take time to recuperate and thus was forced to cancel her "Monte Carlo" promotion schedule in Santa Monica, Calif on Friday, June 10.

While his girlfriend was falling ill during her taping on 'The Tonight Show', Justin himself was seen having fun as he watched a Mavericks vs. Heat game with his manager and a group of pals that day. He was spotted chatting with Lil Wayne during the halftime.

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