Ellen DeGeneres Wears Jennifer Lopez's Iconic Green Grammys Dress - Watch Now!

Ellen DeGeneres visited Jennifer Lopez in Las Vegas to catch her All I Have residency, and she documented the whole thing on The Ellen Show!

First, Ellen went backstage to help JLo prep – and Ellen showed up in Jennifer‘s iconic Versace dress from the 2000 Grammys.

Ellen then decided she was going to act as Jennifer‘s understudy for the performance and prep in case JLo fell ill.

Watch the videos below to see what happened!

Click inside to see more from Jennifer and Ellen…