Lunchtime Poll: Birkenstocks, Yay or Nay?

Arty Filles and Fashion Me Now both wearing the Birkenstock Arizona leather flat (middle- Birkenstock Milano $120)

If an Olsen twin wears them, they're "in", right? Well if that's the case, Ashley Olsen has reinvigorated Birkenstocks, favoring this black patent sandal. Her affair with the grunge era staple can probably be attributed to designers Phoebe Philo of Celine and Giambattista Valli, who both included takes on Birkenstocks in their S/S 13 runway shows. 

I have to say, the laid back "I don't give a sh*t" attitude of a classic pair of Birkenstocks mixed with trend worthy separates is my kinda cool. And the Arizona in white may have to come on my next island getaway with me. 

Let me hear your thoughts. Are Birkenstocks fashionably in, or a fashion sin?

*Images via Who What Where