Canada's Shawn Mendes: from Vine to Time
The 19-year-old Canadian pop star just cracked Time's 100 Most Influential People
John Mayer's heartfelt passage about the young pop singer on Time's list of the 100 Most Influential People drips with a warm but sharp respect for the Canadian heartthrob's musical and cultural impact. Though Mendes' journey is far from over, check out this gallery to see how his entire world has turned upside-down in the past five years.