She last played for Våleranga and Kolbotn after moving home from China and the club Jiangsu Suning.

In February 2017, Herlovsen signed a contract with the Chinese club Jiangsu Suning, at the same time taking a break from playing for the Norwegian national team.

At the 2007 FIFA Women's World Cup in China, Herlovsen scored one goal in the group stage against Ghana.

In the quarter-finals she scored the game-winning goal in Norway's 1–0 victory over the hosts, thus eliminating China from the tournament, in front of 50,000 spectators.

On 9 June 2008, Herlovsen was named to the national team squad to play in the women's tournament at the 2008 Summer Olympics.

[10] In August 2009, Herlovsen was selected for the Norway team that had qualified for the UEFA Women's Euro 2009 in Finland.

Her father is Kai Erik Herlovsen, a former Norwegian international footballer who also played professionally in Germany for Borussia Mönchengladbach.