Britney Spears Parties in Pittsburgh

The following italicized article is from www.justjared.com:

Britney Spears tosses her hair as she rocks out at a performance in Pittsburgh, Penn. on Friday night (March 27).

Also pictured below is Brit-Brit performing her heart out for fans at Nassau Coliseum in Long Island, New York.

See more pics here!

Source: Just Jared