Dianna Agron pressed "fall-forward" in a sweetheart-cut, velour peplum dress with a sheer neckline and side paneling while visiting the "Late Show With David Letterman" yesterday in New York. 

Just a few months ago, I featured Liv Tyler in a spotted, sleeved and shorter version of the same style (both are from the Stella McCartney Fall 2011 collection), which she wore to the launch of the Stella McCartney boutique on Saks Fifth Avenue.

While more simplistic, I tend to prefer Dianna's style in this case, as the strong contrast between the dots and the mesh on Liv's version creates the illusion of chicken pox.

Which style is the right way, and which one needs to hit the highway? You tell me in the comment section below.

Photos (left to right): Donna Ward/Getty Images; Andrew H. Walker/WireImage