A guide to new content in The Sims 3 Showtime Expansion. If you're into her, you'll get stage props from her California Dreams tour, and Katy Perry hair. His confidence is good news for bettors—success in prop bets comes down to how the performer belts out the song. Almost nothing will stop Bryan from performing—he took the stage with a fractured colla. She evidently has a different standard when considering…