Jennifer Lopez and Alex Rodriguez made their red carpet debut as a couple at the 2017 Met Gala

The 47-year-old singer and 41-year-old retired MLB star attended the Monday event at the Metropolitan Museum of Art, which honored Japanese label Comme des Garçons and its founder, Rei Kawakubo.

Lopez and Rodriguez were all smiles as they cozied up for photos. The singer turned heads in a blue Valentino gown with a trailing sheer overlay, and accessorized with diamond Harry Winston jewelry

"You're never fully dressed without a smile... #metball2017," she wrote on Instagram.