O / ostentātrix
noun

ostentātrix

gen. ostentātrīcis · gender feminine · decl. 3rd
ostentator
she that displays; boasts
she that displays or boasts (post-class.).
Lit.: immodica sui ostentatrix, App. Mag. p. 323, 11.—
figuratively
Trop.: pompa ostentatrix vani splendoris, Prud. Psych. 439.