A flapper with a dubious reputation enjoys a vivacious night of dancing and finds herself romantically linked to her boss.



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Cast overview:
Pert Kelly
Winthrop Peabody Jr.
Bodil Rosing ...
Ma Kelly
Pa Kelly (as John Sainpolis)
Winthrop Peabody Sr.
Eddie Clayton ...
Lincoln Stedman ...
Louis Natheaux ...
Jimmy Alexander
Collette Merton ...
Dixie Gay ...


A flapper with a dubious reputation enjoys a vivacious night of dancing and finds herself romantically linked to her boss.

Plot Summary | Plot Synopsis


Flaming Youth - 1929 Model!


Comedy | Drama | Romance





Release Date:

10 April 1930 (Finland)  »

Also Known As:

That's a Bad Girl  »

Company Credits

Production Co:

Show detailed on  »

Technical Specs


Sound Mix:

(Vitaphone) (Western Electric Equipment) (musical score and sound effects)| (alternate version)

Aspect Ratio:

1.33 : 1
See  »

Did You Know?


Actress Phyllis Crane posed for publicity photos in front of the Art Deco backdrop that also was used in this film as the headboard for Peabody, Sr's bed. See more »


When the Store Manager takes Pert Kelly's file from the file cabinet he takes it from the drawer beneath the one marked O-P, not from the drawer marked K, as would be expected. See more »


When Erastus Plays His Old Kazoo
Written by Sammy Fain, Sam Coslow and Larry Spier
Played when Junior sees his dad at the second party and they have a talk
See more »

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User Reviews

Is she a good girl looking to have a good time or just a good-time girl?
15 November 2015 | by (Bradenton, Florida) – See all my reviews

recently restored--combined missing disk with footage--Vitaphone Project

This film is a great example of a supposedly lost film that was found due to the so-called 'Vitaphone Project'. Because early Vitaphone sound films consisted of both the film footage AND an accompanying record for sound, many movies seemed to be only available as sound discs or film footage. However, with the internet age, the Vitaphone Project has managed to track down BOTH copies of many films and film shorts--the record and film have finally been reunited! So, although "Why Be Good?" has been considered lost for years, here it is---for the first time in many, many decades.

Like many of these early sound films, it really is NOT a talking picture but a silent with a soundtrack. A few songs in the film also are sung live by the actors. Otherwise, it's a traditional silent film. As for the soundtrack, it's actually at times too invasive and generally too loud! I actually wish, at times, there was no soundtrack!

As for the film, it's a romantic comedy about flappers--in particular, Pert Kelly (Colleen Moore). Pert LOVES to party and goes out all the time with her friends in order to dance. One night, she meets a nice guy, Winthrop Peabody Jr. (Neil Hamilton) and they fall in love. Later, she learns that he's her boss at the department store! The problem is that Winthrop Sr. is worried that Pert might be a bit of a slut. After all, she loves to party, loves to dance and is clearly a flapper. So what's next? See the film.

This is a pretty good film and is one of the last silent-style films from Warner Brothers. The story is good and talks about the double- standard for ladies--the need to be fun, adventurous, rather slutty and yet chaste! My only real complaint is the ending--which seems to come rather abruptly.

2 of 5 people found this review helpful.  Was this review helpful to you?

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