Watch Chelsea 0-4 Barcelona Champions League Full Highlights
The Spanish side, who won their league by winning 26 consecutive games, losing and drawing none, taken the lead inside 30 seconds.
Lieke Martens strikes the crossbar and then Chelsea struggle to clear. Kirby attempts to hook the ball away but it strikes Leupolz and loops back into the Chelsea goal.
The Catalan giants extend their lead through spot-kick after Hermoso goes down under light pressure from Leupolz. Putellas then sends Berger the wrong way.
Putellas, who scored Barcelona’s second goal through spot-kick, plays a through pass into the path of Bonmati, she robs Charles and slots the ball beyond Berger.
Such poor defending from Chelsea. Martens breezes beyond Charles and squares for Graham Hansen to finish from inside the six-yard box and ended half-time in 4-0.