Klum, who palled around with Siriano backstage, sat front row with fellow famous faces Corinne Bailey Rae, Modern Family's Sarah Hyland and actress Monet Mazur.
So what does the designer appreciate most about his supermodel pal and mentor? "She's a tough critic...She's like, ‘I wouldn't wear that, but I would wear this.' And I think that's so real and perfect."
Total honesty from Miss Auf Wiedersehen? We wouldn't expect it any other way!