The Gers are seeking a remarkable fourth successive triumph in this competition and square off against the team they defeated in league action seven days ago courtesy of a stoppage time spot-kick from Katie Wilkinson.
And from last weekend's side, in comes Jodi McLeary in place of Eilidh Austin.
It means Jenna Fife retains her place between the posts, behind a backline of McLeary, Laura Rafferty, Leah Eddie and captain Nicola Docherty.
In midfield, Kim Shin Ji partners May Cruft, starting in a cup final at just 16 years of age, while Camille Lafaix will operate in a more advanced position.
Wilkinson leads the line in attack, where she is supported by Calliste Brookshire and Mia McAulay.
Available to Crichton on the substitutes bench is Soffia Kelly, Jess Pegram, Brogan Hay, Quinty Sabajo, Li Mengwen, Eilidh Austin, Laura Berry, Fallon Connolly-Jackson and Lily Boyce.
Kick-off in Lanarkshire is 3pm and the final is live on Sky Sports.
RANGERS: Fife, McLeary, Rafferty, Eddie, Docherty, Shin Ji, Cruft, Lafaix, Brookshire, McAulay, Wilkinson
SUBS: Kelly, Pegram, Hay, Sabajo, Mengwen, Austin, Berry, Connolly-Jackson, Boyce
SKY SPORTS CUP FINAL: You can get your match tickets or secure hospitality to roar on the Gers in this Sunday’s cup final, kicking off at 15:00 at the home of Motherwell
RANGERS STORE: Shop all the latest offers at the Rangers Store in-store or online
ROAD TO THE FINAL: Follow Laura Berry in “The Road to the Final” as she travels to every round location on the journey to the big finale