Last Lap: Did Mariah Have An Unhappy Birthday?

Is Demi Lovato going to get to "annoy" Simon Cowell again on X Factor? What popular sitcom is Taylor Swift going to guest star on this year? All this, plus Macklemore opens up about his addictions, in today's Last Lap.

  • We were so excited for Mariah Carey's 43rd birthday yesterday, but apparently Mimi wasn't having quite such a happy birthday. When Kree Harrison and Janelle Arthur tried to wish her a "Happy Birthday" on American Idol, Mariah talked over them and dodged more mention of the "b-word" later when Ryan Seacrest tried to bring it up. [Daily Mail]

  • Demi Lovato has confirmed that she will be returning to X Factor as a judge next year!  Simon Cowell swiftly responded in a statement that he "couldn't be happier that Demi wants to come back next year…even though she can be really, really annoying." Aw. []

  • Taylor Swift is coming to primetime! Ultra girly Swifty is going to guest star on the season final of ultra girly Zooey Deschanel's New Girl as an "important guest" at CeCe's wedding. It's going to ultra girly and ultra funny and tons of feminist blogs will be written about it. [MTV News]

  • In the latest issue of Rolling Stone, rapper Macklemore discusses how crazy his life has been since "Thrift Store" hit and also opens up about his battles with drug and alcohol addiction. "It's very important to go into the rooms of AA, smell the shitty coffee and be reminded that without sobriety, I would have no career." [Rolling Stone]
  • [Photo Credit: Getty Images]