KATY PERRY HEADLINES TODAY'S SUPER BOWL

Katy Perry is the headliner for today's superbowl. Popular musicians like Madonna and Beyonce had performed at halftime of previous superbowls.

The Super Bowl is the annual championship game of NFL (National Football League) and showcases the highest level of professional football in America.

This years superbowl is between Seattle Seahawks and New England Patriots. It will be held in Glendale, Arizona.

An estimated 100 million viewers are expected to watch the super bowl on television.