Emma Hayes labelled Chelsea's Champions League quarter-final demolition of two-time winners Wolfsburg as her "most favourite win in charge".
The Blues won 5-1 on aggregate as they recorded an emphatic 3-0 second-leg win in Hungary to book a semi-final against either Bayern Munich or Swedish club Rosengard.
Goals from Pernille Harder, Sam Kerr and Fran Kirby secured a handsome 'away' leg win in Budapest.
Victory also saw the Women's Super League champions avenge three consecutive Champions League defeats by Wolfsburg, including in the 2018 semi-final, as they overcame the German side for the first time in Hayes' tenure.
"I've faced that opponent so many times and have felt humiliated and lost," Hayes said. "I always thought they were the benchmark for women's football alongside (Champions League holders) Lyon.
"It's a really, really proud day for English football."
Chelsea 'growing up in Europe' - Hayes
Chelsea arguably rode their luck in last Wednesday's first leg when they came away with a 2-1 win despite Wolfsburg dominating the chances and netting an away goal.
They also had to weather some early pressure in the return leg before former Wolfsburg forward Harder put them ahead from the penalty spot after Kerr had been tripped by centre-back Sara Doorsoun-Khajeh.
Wolfsburg's best chance of the leg came a few moments later when Ewa Pajor missed a glorious opportunity to level from just five yards out as she poked wide Fridolina Rolfo's ball across the six-yard box.
But Kerr netted a second for Chelsea four minutes later from Sophie Ingle's ball into the area before Kirby added the third in the final 10 minutes.
"I think this probably ranks as my most favourite win in charge," Hayes said.
"I posed the challenge to the group around their maturity, the learnings, the progression. That's how you show your manager, how we are growing up in Europe.
"I've waited nine years for today. That's a long time for this moment.
"To think the players played with that level of control, discipline, assured nature - they carried out what I wanted them to do in its entirety - I cannot tell you how crucial we think those things matter and everybody does their job.
"This is not just a win to get through to the semi-finals. This is a nine-year project and I think it's a really big day for us and a really big day for women's football in England.
"But, you know, I'm going to say it's not enough. I want more."
Chelsea look set to face German opposition again in their third appearance in the last four.
Bayern hold a 3-0 lead over Rosengard from the first leg before the two sides meet again on Thursday in Malmo.
The semi-final first leg will be played on either 24 or 25 April with the return leg a week later on 1 or 2 May.
This year's final takes place in Gothenburg, Sweden on 16 May.