Picture Perfect (1997)

Genre: Comedy | Drama | Romance
Tagline: She was prepared for anything until love stormed in.
Starring: Jennifer Aniston, Jay Mohr, Kevin Bacon, Olympia Dukakis, Illeana Douglas, Kevin Dunn, Anne Twomey, Faith Prince, John Rothman, Margaret Gibson, Paul Cassell, Ivar Brogger, Peter McRobbie, Bray Poor, Daryl Edwards

IMDB | Wikipedia

Plot: Kate is working on a career at Mercer Advertising, but she is passed up for promotion because she is 'not stable enough', still being single and having no ties to the company. She makes up a story about being engaged to Nick, a guy whom she just met at a friends' wedding. All seems to work out well for Kate. She even gets the attention of a colleague she had always wanted, but then events take a dramatic turn forcing her to 'present' her alleged fiancee to her boss...