Sugar and spice and everything nice, that's what a little lace can add to any look. Too much lace and your style is too frou-frou; but with just a touch of the sheer fabric, a black dress (or white one, as seen on Whitney Port this past week) takes on a certain sexy yet demure appeal.

While actress Gretchen Mol's dress used just a touch of lace to play up her decolletage , "Glee" star Dianna Agron turns up the volume of her LBD with both a lace bustier and wild feathers.

Photos: Gilbert Carrasquillo/Film Magic; Michael Tran/WireImage; Todd Williamson/Wireimage