The Olsen twins are currently in a fight so stupid and easily mended it could serve as a plot to another of their low-budget children's movies just as soon as they hire a desperate enough screenwriter.

It's like this: Mary-Kate and Ashley started two fashion labels together, The Row, a couture line, and Elizabeth and James, a more affordable brand. Both lines are now suffering and Ashley, who's very focused on becoming a "respected businesswoman," believes the failure is due in large part to sister Mary-Kate's partying. Cocaine, as we're sure you know, is a helluva drug.

The rest of the story's all about good lines. Ashley wants MK away from the good line, The Row, until she can cool it with her own, special good lines and the smoking and the drinking, basically all the stuff that makes the fashion industry tolerable.

MK is left to focus on the cheap stuff, er, the more affordable line, Elizabeth and James, “It’s tough because The Row was so much of Mary-Kate’s idea. Mary-Kate has a unique fashion sense,” notes the insider.

“I just see myself more as a business person,” Ashley says.

Great idea, Ashley: give the wasted young millionaire LESS responsibility. That always shapes them right up.