Chelsea secured a sixth successive Women's Super League title as Lucy Bronze's goal wrapped up victory over Manchester United.
An eruption of celebration broke out in the away end as the England international flicked a header past goalkeeper Phallon Tullis-Joyce, all but confirming Chelsea's task was complete late in the second half.
Their task had been clear even before kick-off as news of Arsenal's shock 5-2 defeat at Aston Villa had trickled through the stands earlier on Wednesday evening.
Chelsea knew a point was all they needed to wrap up the title but it was a nervy and uncertain evening in Manchester.
United did everything they could to disrupt and delay Chelsea's celebrations, motivated by still needing three points to secure their place in next season's Champions League competition.
Sonia Bompastor's side, who remain unbeaten in the WSL this season, started off on the front foot, dictating play and testing United's defence.
Mayra Ramirez tested Tullis-Joyce early on, while Aggie Beever-Jones' curling strike was pushed away in the second half.
But United had the better chances in between.
Grace Clinton forced a superb block from Chelsea's world-record signing Naomi Girma and goalkeeper Hannah Hampton pulled off saves to deny Melvine Malard and Elisabeth Terland.
Substitute Terland squeezed a powerful shot inches over the bar later on as pressure increased on Chelsea but the champions found a way to win.
Bronze, signed from Barcelona in the summer, rose highest at a corner to deliver the winning moment and ensured Chelsea's dominance on English football rolls on.
It has been a brilliant start to Bompastor's tenure - the Frenchwoman carrying the baton on with ease and building on former manager Emma Hayes' legacy.
Chelsea can still win the Treble this season with an FA Cup final against Manchester United to come in May and the Women's League Cup trophy already in the bag.
