turns her into the leading lady on his new single -- ♪ my love didn't cost a thing. >> it's natural to wonder, hold your horses, how did that happen? she says her understanding is that mayer saw her original video with the volume turned down while working on his song. >> he saw that my movement synchronized with the song well. >> reporter: they was shooting her to "paper doll." it's been a surreal ride for her. imagine seeing yourself spoofed by a horse. by a family. by a lady walking her dog. >> it's been very chaotic. >> she calls the reaction to her exercise routine inspired by