Interview with Sara in ION Magazine (.PDF) (p. 42 of 54).

"Twins, you know, share many things. Mannerisms, dispositions, occasionally facial features. The list goes on like a genetic grocery tally, fascinating and unpredictable for reasons that charm as much as they confound. The similarities shared by Calgary-born siblings Tegan and Sara Quin stretch to the fullest extent, sharing as they do, a lifetime of memories, a vocation, a catalogue of creativity, and—most would suspect—a single musical identity in addition to their dark coifs and divine cheekbones." (read Filter Mag.com).