The question refers to the leading lady in V (Kim Taehyung of BTS) 'FRI(END)S' music video. According to the provided reference from YouTube, fans initially mistook her for Olivia Rodrigo upon first glance of quick flashes of pictures of V and her in the video. The reference does not explicitly state the actress's name. Therefore, the answer is: The reference does not state the name of the actress in the 'FRI(END)S' music video, but it notes that some fans initially mistook her for Olivia Rodrigo.
