We were astonished to read it, but Heidi  Montag is apparently serious about divorcing  Spencer Pratt - and she's already playing the field again ... sort  of.
 For the first time since the separation rumors started, she  took to her Twitter and openly said she's getting divorced, then  promptly hit on Justin Bieber.
 She may rue the day once his fans  get wind of it.
 The Hills  star wrote: "@justinbieber now that I am getting divorced I think you  and I should do a photo shoot together! Cutie ;) ! I'm closer to your  age."
 Closer than what is  not clear. She's 23 and he's 16. That is minimum security prison  territory for the 'Tag. Still, who can resist that bowl cut? Yummy ...
  

 MMM: That ice cream  isn't the only thing Heidi finds delicious.
 In addition to salivating over the Bieb  online, Heidi also Tweeted some interesting information pertaining to  her upcoming new reality show with Jen Bunney.
 Apparently, she and the former Hills co-star will be  welcoming a third roommate to their Malibu girls' pad (allegedly owned  by Spencer's pal Cougar  Zank):
 Former Hugh Hefner  girlfriend Karissa Shannon!
 Yes, one of  the Shannon Twins, but apparently not the other. We have no idea why,  how she knows Heidi, or whether anyone would watch this crap, but:
 "@karissashannon will be moving in my Malibu  house this summer and will be filming our new show!" wrote Montag to her  1,063,188 followers today.
  Whatever. That's all. Here's Heidi's Justin  Bieber Tweet, which she'll probably take down after 'tween girls  send her death threats a la kim Kardashian:
 
 NOTE: Follow THG on Twitter and get all the  Justin Bieber news without the creepy come-ons. Seriously, Heidi. He  doesn't pass the half-your-age-plus-seven test.