And then there is Dante, their fifth show of the year and the first time they’ve put men’s and women’s on the runway together. The collection falls somewhere between inside joke and earnest experiment. Kostadinov, who grew up in Bulgaria before moving to London as a teenager, explains that he never really identified with British culture. When he got Dante some four years ago, his distinguished, long-snouted terrier became his strongest link to his adopted home. “Everything we do is a…

