R&B superstar Beyonce left one Australian fan reeling in shock on Tuesday (05Nov13) after interrupting his video call to a friend mid-concert to say hello.

The Halo hitmaker was performing in Adelaide as part of her The Mrs. Carter Show World Tour when she spotted a member of the audience using his iPhone to FaceTime a pal who couldn't make it to the gig.

As she approached the male, Beyonce told the crowd, "This is a first. He's doing FaceTime right now."

She then reached down and grabbed his cell phone so she could greet his lucky friend herself, saying, "Nice to meet you", before launching into her song Irreplaceable.

It's not the only fun Beyonce has had with her fans while Down Under - during a tour stop in Melbourne last month (Oct13), she decided to strike a cheeky pose after catching one girl trying to take a snap of herself, known as a 'selfie', with Beyonce performing in the background. Instead, the singer leaned into the shot to 'photobomb' the teenager without missing a beat.