Something Borrowed (Filmed as The Wedding Date)

Elizabeth Young (book), Dana Fox (screenplay) 2005

IMDB: http://www.imdb.com/title/tt0372532/

Single-girl anxiety causes Kat Ellis to hire a male escort to pose as her boyfriend at her sister's wedding. Her plan, an attempt to dupe her ex-fiancé, who dumped her a couple years prior, proves to be her undoing.