Goals from Drew Spence and Jonna Anderson steered Chelsea Ladies to the Women's Super League title with a hard-fought 2-0 win over Bristol City.
Spence headed Chelsea in front and Anderson fired in a late second to wrap up a domestic double after their FA Cup final win over Arsenal earlier this month.
The Blues, led by assistant boss Paul Green with manager Emma Hayes advised not to travel at this stage of her pregnancy, were rarely troubled by the Vixens.
Hayes' side, who are now just one game away from finishing the league season unbeaten, had never won a trophy prior to her arrival in 2012, but this is the second double of her tenure - matching their efforts from 2015.
Chelsea captain Katie Chapman told BT Sport: "It's great to be in this team. You can see what it means to the team. We performed really well this year and I think we deserved another double."
Chapman, who last week announced she would be retiring at the end of the season, added: "To go out with two trophies is unreal. I love this team and I love this club and I think we're deserving of that.
"Hopefully we can go the whole (league) season unbeaten - so we've still got one game to go (against Liverpool on Sunday).
"I've loved ending my career at Chelsea. These girls are great and our team is fantastic. What an honour for me to play in a team like this and to do the double with them."