I can't remember the name or the cast but here's the synopsis:
The movie is about two step sisters (one girls' father marries the other girls' mother). One sister is very popular with the fella's (I think her name was Joy but not sure) and has many admirers and suitors, however, the other sister is somewhat of a wallflower. Though she is not boy crazy like her sister she is interested in a old friend who comes over the invite her to ball. But when he sees Joy, he falls in love with her and invites her to the ball instead. The other sister does end up going to ball (with a stranger she met earlier that was interested in her sister) and attracts many of her sisters former admirers. By the end of the movie she ends up engaged the old friend.
Can someone please help me with the name of this movie??