The most memorable outfit of the 2014 MTV Video Music Awards was Katy Perry and Riff Raff's matching denim outfits. The duo brought us back to the good ol' days of 2001-- when the prince and princess of pop, Justin Timberlake and Britney Spears, were a couple. Timberlake and Spears made their debut as a couple wearing their matching his and hers all-denim ensemble, and Perry and Riff Raff channelled their iconic look.

When the "This Is How We Do" collaborators arrived on the red carpet in an orange Lamborghini, most people thought it was pretty awesome. But what did Spears think?

Perry took to Twitter saying, "@BritneySpears I did my best impression, hope you likey," and Spears responded, "@KatyPerry Just when I thought the demin dress had retired....you bring it back! You looked amazing tonight bb;)"

Back in March, Riff Raff told TMZ that he and Perry were dating, but everyone assumed he was kidding. However, their appearance together last night suggests otherwise. Plus Riff Raff took to Instagram to post photos their evening. One photo features them holding hands with the caption, "Me and my baby showing the word how it's done!"

So maybe they really are a thing? The denim debut would suggest so at least.

Check out a side-by-side comparison (via People Magazine), and let us know what you think in the comments section below!

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