Kourtney, 43, and Travis, 46, wore outfits which complemented each other.
The engaged couple even stopped on the red carpet for a passionate kiss.
The couple wore matching black skirts to the event.
Kourntey’s floor length skirt had a slit which exposed her toned legs.
She also wore a cropped shirt and pointed black heels.
She wore her hair up and opted for a smokey eyeshadow look and nude lips.
Meanwhile, Travis wore a kilt.
Earlier, Kourtney took to Instagram to share images of alterations being made to their clothes.
The Met Gala is held annually to raise funds for the Costume Institute in New York City.