Is it ensure, insure, or assure?
fem. proper name, from Italian Giulietta, diminutive of Giulia "Julia" (see Julia). Cf. French Juliette. Juliet cap (1904) was felt to resemble a type worn in stage productions of "Romeo and Juliet."
A Parisian fancy which is finding little favor here, is the Juliet cap. It is a net of beads or of meshed cord jewelled or beaded at the intersections. Clustered bunches of blossoms and foliage are set at each side of the cap, above the ears. ["Fabrics, Fancy-Goods & Notions," trade publication, New York, January 1904]