First skater looks like Sarah Meier to me but i can't be sure.
Second skater looks like Joannie Rochette, but again i can't be sure.
The third i'm fairly certain is Stephanie Rosethal - i read an article about her competing in something recentyl and there was a photo of her in that same dress.
The first skater is Juliana Cannarozzo, the second is Kylie Gleason, and the third is Stephanie Rosenthal. All three photos are from "An Evening With Champions," in Cambridge, Mass, October 6 or 7.