A pageant is read as being measured by appearance and ranked against others. Dream books link it to self-image and to pressure to meet a standard set by someone else.
When this appeared in your dream, what were you feeling?
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.