Pop songstress Katy Perry is due to release her highly anticipated new album 'Prism' on October 22 and she has now shared a trailer for the offering. 

In this new 7-second clip, a female worker can be seen pushing a stack of boxes through a department store while whistling the melody of Perry's latest single, 'Roar'.

While the identity of the woman is not revealed, the fancy nail designs and purple jumpsuit hint that it's meant to be Perry. 

Meanwhile, she performed on 'Saturday Night Live' over the weekend and treated the studio audience along with viewers at home to renditions of 'Roar' and 'Walking On Air'. 

Earlier this month, she explained that 'Prism' wasn't originally due to be released this year but because she had so much new material ready to be unveiled her record company decided to push it forward: 

"In May I sat down with my managers and said, 'Guys, I think I'm going to have everything ready enough to come out this fourth quarter'. We weren't really thinking we'd be able to put anything out until February [2014], but you don't want to sit on something that's about to burst."