Home Dress Inspiration Monique Lhuillier Perfectly pretty. Monique Lhuillier Sonnet is an exquisitely feminine gown featuring a sweetheart strapless neckline and lace appliqued bodice. The tulle and horsehair mermaid skirt add a gorgeous modern touch. This gown retails from $5,000-$5,999. It’s available PreOwned starting at $2,000. Fall in love with all of our Monique Lhuillier listings here.