The actress, who began the weight loss regime two months ago, is the company's newest spokeswoman. She is now 5lbs shy of her original 30lb goal.
She claimed that after a few days on the plan she dropped 7lbs and by the ninth week, she had shed 25lbs.
"I have a second closet with clothes ranging in sizes 2 to 8 that are waiting for me," she told People.
The Eastwick star added that although she has nearly reached her final goal, she plans on losing even more weight.
"When I get there, I'm going to see how I feel," she said. “It's going to be less about clothes or how a pair of pants fit and more about if I go to the doctor and get on the scale, am I going to be considered a healthy person. If I am, I'm done.”
Rue will appear in an upcoming episode of Private Practice.