T he winter transfer window has been unexpectedly busy in the women's game, especially as a flurry of U.S. women's national team players swap the NWSL for teams in Europe. Naomi G

US Women’s National Team (USWNT) defender Naomi Girma has become women’s soccer’s first ever million-dollar player, joining English champion Chelsea from San Diego Wave FC.

United States defender Naomi Girma has become women’s soccer’s first million-dollar player. The 24-year-old Girma completed her move from San Diego Wave to Chelsea for a reported 900,000 pounds ($1.1 million) on Sunday. Here’s a look at how the record transfer fee (in USD) in the women’s game has increased over the course of the century:

U.S. women's national team defender Naomi Girma is the first million-dollar transfer in women's soccer history. San Diego Wave FC and Chelsea FC announced their deal on Sunday as Girma is now part of the London giants,

And now Chelsea Women are putting down a record-breaking investment to bring Girma to their team: a $1.1 million transfer fee , as Meg reported earlier today. The Women’s Super League side has agreed to terms with San Diego, where Girma is under contract until 2026, but her new contract with Chelsea is not yet finalized.

American soccer star Naomi Girma became the first female soccer player to command a $1 million deal as she moved to an English team. NBC News' Steve Patterson reports.

United States defender Naomi Girma has become women’s soccer’s first million-dollar player. Who else is on the list of most expensive transfers?

You would be forgiven while watching Chelsea beat Arsenal 1-0 on Sunday for wondering why the reigning five-time Women’s Super League champions needed Naomi Girma. The world-record $1.1million (£900,000) signing was announced on the Stamford Bridge pitch before kick-off and then watched her new side effectively wrap up the title with 10 games remaining.