Members of the 49ers are growing mustaches in a throwback tribute to the team's history. San Francisco will be wearing their throwback uniforms on Sunday against Washington, and members of the team have been inspired by photos of the team's greats around their stadium. "Today is Mustache Monday," quarterback Shaun Hill said of the effort, according to the San Francisco Chronicle. "It's for the throwback game. Every day we go to meetings and we go by these beautiful pictures and we admire these guys' mustaches."