Smith has competed in the 2001, 2005, and 2009 editions of the UEFA Women's Championship, as well as the 2007 and 2011 FIFA Women's World Cup with England. She also played in the 2007 China Cup against the United States, Germany and China where she was named the player of the tournament. Smith was voted third in the 2009 FIFA Women's World Player of the Year, fourth in 2007 and fifth in 2006 and 2008.