Who's the top money-maker: Jessica Simpson or her ex-boyfriend Tony Romo? ET sat down with a reporter from Forbes magazine to find out!

Forbes reported that the actress/singer earned $20 million over the last year. "Jessica has an incredibly success licensing empire. Her brands earn about $400 million per year," reporter Lauren Streib tells ET, referring to the star's Jessica Simpson Collection, which includes shoes, handbags and dresses.

Meanwhile, her ex-beau and NFL star Tony Romo signed a contract with the Dallas Cowboys for a reported $67.5 million -- but that's over six years. Plus, his ten million dollar athletic-wear endorsement is for five years.

So, it looks like Jess is the top earner. But could her and Tony's split affect their future earnings?

"I don't see their not being in a relationship having any effect going forward on their business prospects, their endorsements prospects or their careers," Streib tells ET.