Ini Umotong hit three goals as Pompey Ladies won 5-2 at Plymouth in the FA Premier League southern division.
The Blues continued their good start to the season with a five-star showing.
Nigerian international striker Umotong scored twice in the first half.
Plymouth pulled a goal back through Jessie Jones.
Midfielder Molly Clark then made it 3-1 to the Blues and full-back Jess Frampton added a fourth.
Umotong completed her treble, before Plymouth got a consolation goal and were reduced to 10 players with a sending off.