neither new nor original
There's been quite a few studies like this over the past decade or two, usually by promovendi from the fuzzy sector, and they all come to the same conclusion: high heels make women appear to be more sexy.
Absolutely not surprising, given that high heels, as mentioned in previous posts, do indeed change the shape of the leg, making it appear longer, emphasising the calf, thigh, and buttocks, which are simple biological sexual/fitness markers.
That in itself would still not amount to much, since they are only subtle secondary markers. High heels, however, also force an upright posture with "tits and ass out" and a gait that is usually referred to as a "strut". Both posture and gait are things that women tend to do naturally by design, but especially when they are out hunting and up to mischief. Absolutely no heels needed there. Physics and evolution made them that way, and the same mechanism makes us blokes pay attention.
The sad part about the cultural aspect here is that in most cultures this quite appealing behaviour is rigorously (and sometimes violently) suppressed as "inappropriate".