From FaceTiming to posing for selfies in mid-song, Beyonce has been quite interactive with her fans during her Mrs. Carter Show World Tour. But now she's taken it to a new level.

While performing her hit song 'Irreplaceable,' Bey walks toward the edge of the stage to meet Sofia Kotkis, who was front and center for the show. Kotkis, who is legally blind with hearing and muscular difficulties, had the opportunity to sing along with the superstar.

Kotkis, 13, took on the responsibility of singing the hook ("To the left, to the left"), sharing a moment that was not only a dream come true but also one that warmed the hearts of the 15,000 people who attended the show that night.

Bey just finished up the Australian and New Zealand leg of her world tour. The North American tour will kick off again in Vancouver on Nov. 30.