Yallop made her senior international debut in a 6–0 loss to the
United States on 10 October 2004. Yallop captained the U-20 side at the
2006 FIFA U-20 Women's World Championship finals in Russia, where they lost to
Australia (3–0) and
Russia (3–2), before holding Brazil to a goalless draw, Yallop was included in the New Zealand squad for the
2008 Summer Olympics, playing the full 90 minutes in each of New Zealand's group games, scoring one of New Zealand's goals in the 2–2 draw with
Japan. Attending her first Women's World Cup at
Germany 2011, Yallop earned her 50th cap in her only appearance at the finals in a 1–1 draw with
Mexico as New Zealand won their first ever point at a Senior Women's World Cup. She played in all of New Zealand's games at the
2012 Summer Olympics. She featured in one of New Zealand's three matches at the
2015 FIFA Women's World Cup in Canada. On 20 September 2017, after playing two games against
United States, Yallop announced her retirement from international football. ==Personal life==