MIAMI -- As the rich and famous stream into this glamorous city for Monday night's BCS National Championship Game, 22-year-old Bryce Burton -- all 5-feet-7, 145 pounds of him -- just might be the biggest celebrity in South Beach the next few days.As No. 1 Notre Dame and No. 2 Alabama prepare to battle for college football's biggest prize, Burton is in demand as the leprechaun mascot for the Fighting Irish."We've been so busy," the Notre Dame senior told the South Bend Tribune (http://bit.ly/WsAq1N ) on Friday between events. "We're getting ready to go visit The Covenant House right now."