Maria Aragon, a 10-year-old Lady Gaga fan, won raves, Internet fame and kudos from Gaga herself for her YouTube covers of the pop superstar.
This week, the Little Monster received the present of a lifetime from the Mother Monster - a chance to duet with her on stage, live in Toronto.
It's pretty cool that Gaga made good on this promise and made it happen. Here they are performing a piano duet of her hit, "Born This Way" ...
Last month, Maria Aragon caught Gaga's attention, with the singer promising her she could get up on stage and sing with her in concert.
Actually following through on it will only further her reputation as one of the most beloved, fan-friendly entertainers around. She rules.