Debbie
This is the shirt she wears in 103 to Woody's:
Also I'd just like to say that the light is reflecting off of the sequins, there is nothing wrong with my chin normally
She wear's this sweater in season 4 (I can't remember the number, but I think it's the one where Emmett comes over)
And I don't know when she wore this, but it's definatly a Debbie shirt. :P