Beth Ditto's biggest challenge
The Gossip singer - who recently designed her own range of clothes for British high street store Evans - found meeting the outspoken Chanel creative director difficult because of his strong opinions and views.
She said: "Being face-to-face with people like Karl Lagerfeld was one of the most challenging things I have ever done."
Earlier this year Karl slammed German supermodel Heidi Klum, branding her too fat for the catwalk.
Beth, who is known for her rounded bodyshape and eccentric outfits, explained she found it hard to connect with the designer because of her individuality.
She explained to Scotland's Sunday Mail newspaper: "I never knew what resistance was really like until I entered the mainstream. When you are in a punk scene and everybody around you thinks like you, talks like you and walks like you and you have the same ideology, that sort of resistance doesn't exist.
"It is much more dangerous to be a feminist and stand in front of Karl Lagerfeld and look him in the eye. That felt like resistance far more than being at a punk show full of people who already know about politics and feminism."
Previously, Beth admitted she preferred the designer's work to his personality.
She confessed: "What if, come tomorrow, he hates me? Well, I don't really care because he's not my friend. It's not like a break-up. He's just a person who makes dresses for me sometimes.
"I wouldn't say he's a really cool person but he's a really cool artist. I appreciate a lot of art by really sh**ty people. And I'm not so weak to think that this is going to last or they're going to love me forever."