You May Want To Sit Down Before You See The Dress Mandy Moore Wore On Jimmy Fallon—It’s So Sheer!

The actress accessorized her gorgeous dress with matching purple Aquazzura suede plexi see-through sandals, as well as purple eyeshadow which complemented the rest of the look perfectly. Her light brunette locks were styled in a silky, bouncy down do, while accessories were kept to a minimum to let the dress do its thing, save for a pair of bejeweled Delfina Delettrez drop earrings.

Not content with giving us just one wow-worthy look for her appearance on the show, Mandy also changed into another memorable outfit when she took to the stage to perform after her interview.

For her performance of "In Real Life," the singer and actress changed into a sleek black maxi dress by Macgraw, which featured voluminous balloon sleeves and a high-necked mesh front. It was certainly different to her previous look, but it was still just as breath-taking!

We're going to miss seeing her as Rebecca Pearson on This Is Us as the show comes to an end (we're already crying!) but we know that she is onto other fun and exciting ventures – including the release of her new album, "In Real Life," and a summer tour!