Brooks, considered the best 'keeper in WSL 2BCFC
Brooks, 24, joined from Sheffield United.
She will be competing with Hannah Hampton for the 'keeper's jersey after the departure of Ann-Katrin Berger to Chelsea.
Brooks came through the ranks at Manchester City, penning a first professional contract there in 2015.
She went to Everton on a season-long loan ahead of the 2016 WSL campaign before moving to Fylde.
A former England Under-18s captain, Brooks has worked previously with Blues Goalkeeper Coach Tony Elliott in the Lionesses set-up.
Brooks, considered one of the best 'keepers in the Championship, is also a qualified coach and hopes to continue developing this aspect of her career whilst with the Club.
Brooks' move was completed before Thursday's transfer deadline.