Songfacts®:

• This song is all about a man who is super vain. Henderson told HMV.com the tracks on Chapter One are snapshots of how she felt at the time. On this song, for instance she said, "I was so angry at the person in that track and out came this track that's really full of attitude."
• Henderson told MTV UK the song shows a much more edgy side to her. "I think a lot of the time, people imagine me as a very soft spoken artist… this does showcase another side of me," she explained. "Not that I'm trying to shock or anything like that, it's just you know (there) are different sides to everybody's character and different things that people can relate to."
• Ella Henderson wrote the song with Al Shux, whose other songwriting credits include Jay-Z's "Empire State of Mind" and Lana Del Rey's "Young And Beautiful."
• Henderson explained the background to the song: "It's about the most self-centered person I've ever met," she said. "Everyone has experienced that type of person. They love themselves before they can love anyone else. 'Mirror Man' is probably my favorite song to sing live. I'm not about attitude at all, but the song is so honest and rude that everyone loves it, and they're desperate to discover who Mirror Man is."
• Asked by OfficialCharts.com if the subject of the song is aware it's about them, Henderson replied: "Probably not because they love themselves that much! I think everyone in life has experienced a mirror man or mirror girl. If you haven't you will at some point."