jessica-simpson-biggest-los.jpgJessica Simpson will appear on The Biggest Loser, but we're not going to see her handing out fitness tips -- instead, she's going to invite a lucky contestant to go on a shopping spree with her!

In an episode set to air in mid-March, Jessica will treat a challenge winner and their guest with a visit to her personal showroom to pick out anything they want from her clothing, handbag and skincare lines.

"I was so happy when I was asked to help style two contestants from The Biggest Loser," Simpson tells People. "I am truly inspired by how hard these contestants worked to accomplish their goals for a healthy lifestyle ... It was so much fun seeing the [contestants] try on clothes they would have never fit into before and feeling sexy. We had an amazing day together!"