Christina Aguilera, Jill Scott and Will Smith will help ring in the country's 250th anniversary in Philadelphia by performing at this year's Wawa Welcome America concert on July 4. The free event will also include The Roots and will be hosted by comedian Wanda Sykes on the Benjamin Franklin Parkway. This year also marks Wawa Welcome America's 35th anniversary. #wawa #welcomeamerica #250thanniversary #july4 #fourthofjuly #philly #philadelphia