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Characters Vivian Ward and Edward Lewis stayed at the luxurious Regent Beverly Wilshire in Los Angeles. More than 25 years later, the hotel is still celebrating the film, offering three "Pretty Woman" luxury packages for fans with extremely deep pockets.

Arnon Milchan, the Israeli producer behind such films as "Gone Girl" and "The Revenant," optioned the script for "Pretty Woman" for only $2,500. He also changed the original ending, from one where Gere leaves Roberts to the existing happier conclusion.

American actor Richard Gere, who played Edward, was actually the one tickling the ivories during the piano scene. A trained pianist, he also composed the tune that's heard in the film.

Vivian, played by American actress Julia Roberts, belts out Prince's 1986 hit single "Kiss" while listening to a walkman in the bathtub. Unbeknownst to her, Edward is watching her nearby with great amusement. "Don't you just love Prince?" she says with embarrassment after being discovered.

American screenwriter J.F. Lawton's original title for the film was "Three Thousand," after the amount agreed upon by Edward and Vivian. It was later changed to "Pretty Woman" after the Roy Orbison song used in the soundtrack.

"La traviata," which means "The Fallen Woman," is an opera by Italian composer Giuseppe Verdi about a woman of the night who falls in love with a wealthy man.

Edward meets Vivian for the first time after pulling over to ask for directions in a 1990 Lotus Esprit SE. The car was one of only 324 that Lotus sold in the U.S. that year. Both Ferrari and Porsche declined the use of their cars for the film because they did not want to be associated with soliciting prostitutes.

American actor Jason Alexander, perhaps best known for his role as George Costanza on "Seinfeld," portrays Edward's insensitive lawyer. Not that there's anything wrong with that.

Kit, portrayed by American actress Laura San Giacomo, uses a pizza box to write down the name of Vivian's hotel. She scribbles the words "Reg Bev Will" with lipstick.

Vivian is watching and laughing at the iconic grape stomping episode of "I Love Lucy" during her first night in the hotel. In the DVD commentary, director Garry Marshall said he had to tickle Roberts' feet off-screen to get her to giggle.

Gene's character Edward Lewis has a fear of heights, going so far as to even attempt to track down "penthouses that are on the first floor." Love helps him overcome his fear when he climbs a fire escape at the end of the film to be with Vivian.