Per team and National Women’s Soccer League policy, terms of the deal were not disclosed.
The 23-year-old from Auckland most recently played for Liverpool Ladies FC in the FA Women’s Super League. In two seasons (2015, 2016) with Liverpool, White had 33 appearances and scored four goals.
Boston Breakers head coach Matt Beard, a former Reds boss, said: “Rosie of course is a player who I worked with for a few months in my last season at Liverpool.
“She is technically a gifted soccer player who can play in numerous positions in the front three or in midfield.
“On top of that, she is a great person and brings international experience with the New Zealand national team.”
White becomes the second Kiwi to join the world’s biggest women’s league, with Football Ferns skipper Abby Erceg playing for league champions the Western New York Flash.
White said: “I am really excited to be signing with the Boston Breakers. It is an amazing opportunity and a new adventure and challenge for me. I can’t wait for it to begin.
Prior to Liverpool, White starred at UCLA, helping the Bruins win the 2013 NCAA National Championship. In four years at UCLA (2011-2014), White scored 17 goals and added 12 assists.
One of her biggest moments at UCLA came in 2013 when she scored the winning penalty kick in the shootout in the semifinals against Virginia.
Capped 73 times for the New Zealand Women’s National Team, White has scored 14 goals for her country. She’s played in two FIFA Women’s World Cups (2011 in Germany and 2015 in Canada) and two Olympic Games (2016 in Brazil and 2014 in London).
She also played for the Football Ferns in the 2008 FIFA U-17 Women’s World Cup and the 2008 and 2010 FIFA U-20 Women’s World Cups.
The Golden Ball winner at the 2014 OFC Women’s Nations Cup Tournament, White also earned Young Female Player of the Year honors for her country twice (2008 and 2009). White made her debut with the senior national team on June 10, 2009 in a 6-0 loss to China.