Check out a sneak peek of Matthew and Cameron Diaz dancing on Celeb Dance Factor, the fake dancing competition created for “What To Expect When You’re Expecting”!Cameron Diaz, NBA superstar Dwyane Wade, and “The Hills” star Whitney Port competing on a new reality dance competition? “Dancing With the Stars”, eat your heart out.Actually, we’re sorry to report that this new show, “Celebrity Dance Factor,” isn’t real; it’s a fake “DWTS”-esque reality show that’s a part of Lionsgate’s new big-screen comedy, “What to Expect When You’re Expecting” (hitting theaters May 18). Diaz’s character, TV fitness guru Jules Baxter, is a contestant on “Factor” and strikes up a romance with her pro partner, Evan (“Glee’s” Matthew Morrison) — which leads to an unexpected pregnancy. Well, well… that must’ve been some samba. To promote the film, Lionsgate has created a fake trailer for Baxter’s season of “Celebrity Dance Factor” that puts the current “DWTS” crop to shame. Source”What To Expect When You’re Expecting” hits US theaters on May 18, 2012!