Maren Mjelde's goal ensured Chelsea reached their second successive Women's Champions League semi-final
Maren Mjelde scored a dramatic injury-time goal at Paris Saint-Germain to send Chelsea through to the Women's Champions League semi-finals.
The tie looked set for extra-time until Mjelde poked home from Karen Carney's cross to seal a 3-2 aggregate win.
Kadidiatou Diani had put PSG ahead on the night with the game's first shot on target early in the second half.
An Ann-Katrin Berger own goal levelled the tie before Mjelde's late effort knocked two-time finalists PSG out.
The Women's Super League champions will face holders Lyon in the last four, after they saw off last season's beaten finalists Wolfsburg 6-3 on aggregate.
Chelsea pressed early on but failed to threaten to add to their two-goal first-leg advantage for much of their trip to the French capital.
The Parisians were nullified for much of a poor fist half, but did show late glimpses of their capabilities - Diani sending a warning shot narrowly wide, before Marie-Antoinette Katoto was wastefully off target.
Diani, however, sparked PSG to life when she turned home a low Ashley Lawrence cross from 10 yards out immediately after the break.
A calamitous fumble by Berger as she attempted to collect a floated corner at the far post made it 2-0 in the second leg and levelled up the quarter-final tie with 34 minutes remaining.
PSG were most menacing in search of a late winner, however Mjelde secured what seemed an increasingly unlikely aggregate win for Chelsea when she raced in at the far post to prod home captain Carney's cross.
PSG: Endler, Cook (Bunn 90+3), Geyoro, Katoto, Diani, Lawrence, Paredes, Berglund, Perisset (Glas 5), Formiga, Wang.
Unused substitutes: Kiedrzynek, Diallo, Zamanian, Morroni, Baltimore.
Chelsea: Berger, Blundell (Carter 74), Mjelde, Eriksson, Andersson, Spence, Ingle, Ji, Bachmann (Kirby 60), England (Bright 60), Carney.
Unused substitutes: Lindahl, Cooper, Riley, Engman.