Should I lie about my age?
In a word - no. But.....you also don't have to advertise it. Obviously for some programs and competitions, you have to provide proof of age. But for most auditions, if you look 25, but you're 40.....let them think you're 25. Don't put your date of birth OR weight on a resume. Different topic, but - people carry weight differently, and if you leave a number on a piece of paper for people to ponder, that's what they will remember.