Sideburns are read as style, nostalgia and a hint of rebellion. They suggest a wish to express individuality through how you look.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.