I think her name is Debra

 If you know why this t-shirt is awesome, you and I are going to get along just fiiiiiiiiiiiiine.

 Cardigan - antique store (info here)
T-shirt - beck.com
Cropped pants - Target
Sandals - Charles David

 Cardigan detail:

I've seen Beck in concert several times but his show in 2006 blew my mind. He rocked a few songs then said that the band and he had pulled into town kinda late and so he was gonna sing a few acoustic songs while the back-up band ate dinner. A dinner table full of food was brought out on table and all the musicians ate while Beck sang a song alone, just him and his guitar. He started singing a second acoustic song, when the drummer started hitting his water glass with a spoon. Then another guy started banging his hands on the table. Then pretty much this happened:

Sooooo amazing to see live. Seriously one of the top 10 concerts of my life (and I've been to HUNDREDS). Awesome.