Not sure why the breast count became a bigger F:13th element than other slasher flicks but this one does have a good count. If that is an element you are looking for the following ladies are on full display from the waist up at some point in the movie.
Julianna Guill as Bree
Willa Ford as Chelsea (seen skiing in the trailer)
America Olivo as Amanda
The above three are fodder kills.
The two biggest female leads do not bare themselves.
Danielle Panabaker as Jenna
Amanda Righetti as Whitney