This article examines the progression of the counter-clockwise nasal vowel chain shift in Parisian French, investigating in particular the influence of biological sex and of sexuality on the propagation of this change from below. The research presented forms part of a study on the participation of sexual minorities in ongoing sound change; this study aims to address the continued exclusion of sexual minorities from sociolinguistic studies, which not only invisibilizes queer people, but underlines their behaviour, linguistic or otherwise, as gender-deviant. Using a sociophonetic methodology, an analysis of nasal vowel quality provides evidence for sex- and sexuality-differential linguistic behaviour in the advancement of the nasal vowel chain shift. The results confirm the progressive but non-conformative linguistic behaviour of women, both straight and queer, as outlined by Labov (1990) and numerous other sociolinguistic studies, but also indicate that queer men are centre-stage in driving the change forward. This research is a first step in formalizing data-driven principles about the linguistic behaviour of sexual minorities and their role in language change, akin to the principles advanced to account for the behaviour of women.