Singer Justin Bieber performs on stage at Acer Arena on April 28, 2011 in Sydney, Australia. (Getty Images)
Justin Bieber and his adorable 4-year-old sister. (YouTube) Justin Bieber invited his adorable baby sister Jazmyn up on stage last night at Toronto's Massey Hall. The result: quite possibly the cutest duet ever performed live.
The 2,700 people who filled the venue were treated to some of the pop star's greatest hits, as well as the debut of his latest track "Be Alright." And while we're pretty sure those fans came to see The Biebs, it was Jazmyn who stole the show.
The tiny 4-year-old joined her big brother in a rendition of his breakout hit "Baby." With the crowd roaring in approval, Jazzy -- as Bieber calls her -- looked like a total natural. While we wait for her to grow up into the next big teen sensation, here's a clip of the amazingly cute moment:
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