Pernille Harder scored against her former club for the second time in a week as Chelsea secured a 3-0 win over VfL Wolfsburg to complete a 5-1 aggregate victory in their quarter-final in Budapest.
Despite holding a 2-1 lead from the first leg, Chelsea made a nervy start before two-time winners Wolfsburg conceded a penalty in the 26th minute when Sara Doorsoun-Khajeh brought down Sam Kerr inside the box.
Harder slotted the penalty into the bottom left corner, before the English champions extended their advantage through Kerr shortly after.
The Australian striker took the ball on the turn before finding the bottom corner with a powerful strike past Wolfsburg goalkeeper Katarzyna Kiedrzynek.
Fran Kirby added gloss to the scoreline with an 81st minute strike as Chelsea booked a place Champions League semi-finals for the third time since making their competition debut in the 2015-16 season.
The result comes as a huge blow for last year's runners-up Wolfsburg, who won each of their four matches in the competition without conceding a goal on their way to the quarter-finals.
Chelsea will next face the winner of the quarter-final tie between Bayern Munich and FC Rosengard. Bayern hold a 3-0 lead over the Swedish outfit heading into the second leg on Thursday.
Barcelona advanced with a 4-2 aggregate victory over Manchester City after a 2-1 defeat in the second leg of their quarter-final at the City Academy Stadium.
City came into the game with a 3-0 deficit after losing the away leg, played in Monza because of travel restrictions, but they began brightly and pulled back a goal when Janine Beckie prodded home in the 20th minute after Barca had failed to clear a corner.
Asisat Oshoala levelled the score by slotting into an empty net in the 59th minute as Barcelona punished City for some poor defending. But City continued to push and Ellen White won a penalty that Sam Mewis converted to make it 2-1.
The visitors had responded strongly to going down a goal and could have killed the tie in the first half but for defender Lucy Bronze, whose heroics twice denied Barca left back Leila Ouahabi on the goal line.
Barca will now face the winners of the quarter-final between Olympique Lyonnais and Paris St Germain, which has been rescheduled for April 18 after several Covid-19 cases in the Lyon squad.
Seven-times champions Lyon, who have claimed the last five titles, won the first leg 1-0 in Paris
