Alexa Chung's schoolteacher-chic Carven dress that she wore to last night's Burberry Serpentine party in London reminded us of another Alexa Chung moment . . . and another . . . and another. Alexa has a propensity for donning a white-collar look, be it via Chanel, Marc Jacobs, or Vuitton. You know she's cool, so the fact that her style is buttoned-up and plain old, old-fashioned, feels super fresh on her. That said, she wears it a lot. Do you love the look or is it time for Alexa to move on? Click our slideshow to see her looks, and vote at the end to let us know!