The \"Gone Girl\" and \"I Feel Pretty\" actress showed off her fit physique in a sheer dress with cutouts around her torso and open back.

Getting Ready in the Custom Gown

Ratajkowski channeled Cher for her fifth Met Gala as the singer perfectly embodied this year's style exhibition at the Met Museum -- which also serves as the theme for the gala -- \"Camp: Notes on Fashion.\"

The colorful exhibition uses Susan Sontag's 1964 essay \"Notes on Camp\" as its inspiration and it portrays how fashion designers have paid tribute to camp over the years.

\"PHOTO:
Ron Galella/WireImage via Getty Images, FILE
PHOTO: Cher at Bob Mackie's 1988 Halloween Party.
>

Ratajkowski told \"GMA\" the Vogue-hosted fashion event was the perfect opportunity to pay homage to the legendary singer and actress.

\"For me, Cher is just such an icon; she is someone that I have always looked up to. 'Moonstruck' was one of my favorite movies growing up. It still is,\" the model said. \"There's not always a moment to really pay homage to her -- and we had this really great vision of doing that and pushing that limit, and this is the opportunity to do it.\"

Ratajkowski turned to Dundas and Bousis, who custom designed a hand-beaded gown that echoed some of Cher's signature looks.

\"PHOTO:
ABC News
PHOTO: Model Emily Ratajkowski gets ready for the 2019 Met Gala in a custom Peter Dundas nude and silver embroidered cut out gown with long train and crystal and feather headpiece by House of Malakai.
>

Dundas said he played with \"Egyptian motifs\" and included an \"entire wing that goes from the side of the dress to the back.\"

\"Then, doing the headdress to kind of work back to that with the wings as well,\" the designer added.

\"PHOTO:
ABC News
PHOTO: Model Emily Ratajkowski gets ready for the 2019 Met Gala in a custom Peter Dundas nude and silver embroidered cut out gown with long train and crystal and feather headpiece by House of Malakai.
>

The Swarovski crystal and feathered headpiece took nearly three weeks to complete.

\"Emily is the only person who could wear this dress; it was made for her,\" Bousis said.

\"PHOTO:
ABC News
PHOTO: Model Emily Ratajkowski gets ready for the 2019 Met Gala in a custom Peter Dundas nude and silver embroidered cut out gown with long train and crystal and feather headpiece by House of Malakai.
>

\"I'm just obsessed,\" Ratajkowski said of the delicately crafted design. \"This is that moment where you are like, 'OMG it is coming together -- it is going to happen.'\"

\"PHOTO:
ABC News
PHOTO: Model Emily Ratajkowski gets ready for the 2019 Met Gala in a custom Peter Dundas nude and silver embroidered cut out gown with long train and crystal and feather headpiece by House of Malakai.
>

Stunning on the Pink Carpet

\"PHOTO:
Matt Baron/REX via Shutterstock
PHOTO: Emily Ratajkowski attends the 2019 Met Gala Celebrating Camp: Notes on Fashion at the Metropolitan Museum of Art, May 6, 2019, in New York City.
>

Inside the Met Gala

View this post on Instagram

With Our Goddesses @emrata #WeLoveYou #emilyratajkowski #dundasworld #peterdundas #evangelobousis

A post shared by Evangelo Bousis (@evbousis) on May 6, 2019 at 6:08pm PDT

Bousis shared a snapshot inside the Met alongside the model and Dundas.

Cher Steals the Spotlight with Surprise Performance

\"PHOTO:
Instagram/Gwen Stefani
PHOTO: Cher performs inside the Metropolitan Museum of Art during the 2019 Met Gala.
>

To make the night even better for Ratajkowski, Cher, 72, surprised the attendees with a performance of some of her greatest hits. For her look, the iconic star went with a bright blue curly wig and sheer, patterned jumpsuit.

Perhaps Ratajkowski will channel that one next year.

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