Definitely wear glasses if you normally don't or do something a little different.

Or, if you styled your bangs down, spike them up, or vice versa.

Like Depp said, you will be surprised that no one will notice.

If they do notice, don't say "what are you talking about?" That will be a dead give away.

If they ask, just say you had a scalp treatment done and ask if they notice it makes your hair look fuller. Just make up something simple like that.