There's a major battle brewing in women's shape wear! Heather Thomson from “The Real Housewives of New York” built a fashion empire making undergarments with her company, Yummie Tummie. Now, the reality star is squaring off with Spanx queen Sara Blakely over a product that they both claim to have invented. Thomson talked to “omg! Insider” about the multi-million dollar war that could be headed to the courtroom! Check out “omg! Insider” for the latest entertainment news.