The premise of this lesbian sex vignette is a bit forced, the culprit being a lousy script by a frequent culprit of same, Gamma's Midnight. Clumsy scene begins with Maid of Honor Kayley Jones talking to herself out loud (to deliver story exposition) as she selfishly tries on the wedding gown for her friend Vicki Chase's upcoming wedding, but it's confusing at first that Vicky is not destined to wear the gown, but rather her fiancee. We never see Vicky's spouse-to-be or even learn her name, a big hole in the screenplay. Anything to save a buck apparently in terms of paying a third actress.
As the scene plays, with crudely improvised dialogue, it makes no sense. Vicki gets mad at Kayley for ruining the dress (it tears when they take it off her) but then is so flattered that her friend is in love with her that she renounces the marriage out of thin air. Cue the XXX action! It's a waste of the actresses' talents.
Title "Loose Threads" more appropriately refers to the script rather than the gown.