Just found this site today. It looks really cool, they have Twilight t-shirts and bumper stickers and stuff but it's like for 粉丝 not just advertising the movie.
Tons of new Official Twilight 粉丝 gear! Peace 爱情 Twilight, Team Jacob, Team Edward all your 最喜爱的 语录 sayings and 更多 on Twilight t-shirts, hoodies, bumper stickers, license plate frames, mugs and more. All ages and sizes.