Amy Jones and Tammy Beaumont both hit half-centuries as England cruised to an eight-wicket victory over Sri Lanka at Katunayake to complete a 3-0 one-day international series win.
Sri Lanka, whose defeat in Hambantota made Thursday's final match a dead rubber, won the toss and elected to bat, recovering from a poor start to set a victory target of 175.
Kate Cross claimed the wickets of both openers inside the first 10 overs, with Sri Lanka slumping to 52-4.
Harshitha Madavi, though, made 42 to help push the total into three figures before she was caught and bowled by Alex Hartley.
Oshadhi Ranasinghe (29), Nilakshi De Silva (19) and Inoshi Priyadharshani (one) were all then run out. Cross finished with 2-25, while Anya Shrubsole and Hartley both also had two wickets as Sri Lanka were dismissed for 174 with the final delivery of the innings.
England soon set about the Sri Lanka attack, putting on 127 for the first wicket as Jones chalked up a third ODI half-century before she was bowled by Sashikala Siriwardena for a 76 which came off 58 balls, with eight boundaries and three sixes.
Beaumont was out in the 25th over, also bowled by Siriwardene, having made 66, with nine fours.
Lauren Winfield finished unbeaten on 29 and captain Heather Knight was three not out as England claimed victory when they reached 177 for two in the 27th over.