Well hints have come in this year that point to her getting the bra, she even hinted to it. She's even been prepped for it this year..and I think her speech has only recently become up to par with what they want for the fantasy bra..because they go on Leno, or Conan. Also a lot of Cnn programs.
Adriana is not someone who will speak up about her not getting her fair share...it's not in her character. So when she mentioned something in a recent interview about being the only girl who hasn't gotten the bra...it was odd esp when the questions about the fantasy bra where directed to her...so I think it was most likely a set up with VS, so it would get her more attention and make people realize she would be the one wearing it.