This 'Full House' movie preview shows how it all became about the Olsen twins

At just seven years old, Mary-Kate and Ashley Olsen were already flexing their mogul muscles.

Lifetime released a new preview from its "Unauthorized Full House Story," which shows that the twin girls are making the most out of their fame from the hit comedy. (Thankfully they survived John Stamos' plot to get them fired!)

In the clip, the twins' older co-stars watch as they make an appearance on a TV talk show.

"How come they get invited on all of the talk shows?" complains Jodie Sweetin aka Stephanie Tanner (played by Jordyn Olson).

"They're kids! What do they even have to talk about," says Andrea Barber aka Kimmi Gibler (Jaime Schneider)

The twins began starring in and producing straight-to-DVD and TV movies under their company, Dualstar, in 1993. It would become a multi-million dollar business for the young girls.

They would later move into fashion design, which they continue in today. In 2007, Forbes reported their combined net worth at $100 million. Several sites now report it's $300 million.

Watch the preview below:

 "Unauthorized Full House Story" airs Saturday at 8 p.m on Lifetime.