Khadija Shaw gave City the lead in the 38th minute before Alex Greenwood doubled the advantage deep into first-half stoppage time.
Brighton remained in the contest for long periods, but Aoba Fujino's strike midway through the second half put City firmly in control before Vivianne Miedema added a fourth late on.
The scoreline was emphatic, although the underlying numbers suggested a more competitive contest. However, City were far more clinical in front of goal.
Greenwood, who scored City's second goal and helped secure a clean sheet, was among the standout performers.
The result clinched FA Cup glory for Man City, capping an impressive season with a domestic double.
More to follow...

