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21 August 2012, 19:41 | Updated: 21 August 2012, 19:47
The American stars help promote the worldwide event as they encourage fans to get involved during the promo.
Justin Bieber and Taylor Swift have teamed up for a promotional video which promotes the worldwide Fashion Night Out event.
The 'Boyfriend' singer can be heard asking for his fans to come and "hang out" with him as he reveals he will be getting involved in the day.
The annual event will take place on Thursday 6th September and sees stores in cities around the world staying open for longer.
There is the chance to meet celebrities, fashion designers and models at various special events.
"And who doesn't want to meet models," asks Justin at one point during the clip. He continues: "You bring our friends and I'll bring mine."
Country star Taylor rocks a t-shirt and tiny pair of shiny shorts in the video as she encourages everyone to get involved.
You can watch the video of Justin and Taylor starring in the Fashion Night Out advert below:
The artists also teamed up for a song which was expected to feature on Justin's recent studio album 'Believe'.
The Canadian star's manager Scooter Braun recently updated fans on the status of the track and teased they could have further recordings together in the pipeline.