Bachelorette showgirl singers Dorothy Shaw and Lorelei Lee are sailing to Paris, courtesy of Lorelei's millionaire boyfriend Gus Esmond, Jr. They're also being shadowed--thanks to Gus Sr.--by private detective Ernie Malone. Lorelei gets embroiled in a contretemps involving Sir Francis "Piggy" Beekman, outspoken Lady Beekman, and a tiara. Dorothy, meanwhile, becomes involved in a running flirtation with the detective. All's well that ends well, but...