Complex sentence: The same line is spoken by one of Swift's iterations at the end of the video, who is wearing the same outfit Swift had worn during the 2009 MTV VMA Awards, when West infamously interrupted her award-winning speech for Video of the Year.
Split into simpler sentences: The same line is spoken by one of Swift's iterations at the end of the video. She is wearing the same outfit Swift had worn during the 2009 MTV VMA Awards, when West interrupted her award-winning speech for Video of the Year.