The theme for this year was 'Camp: Notes on Fashion' and was based on Notes on Camp, an essay written in 1964 by American author Susan Sontag.
Priyanka outdid herself on the red carpet, while Deepika played it safe.
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Priyanka wore a grey-yellow-pink Dior sheer gown with a thigh-high slit and feathered hem, along with a mesh around her head.
Her entire look appeared to be inspired by Lewis Carroll's Alice In Wonderland.
She wore a spiky silver gown with her hair in tight and frothy curls, just like the Red Queen.
Her eyebrows were painted grey, and her eyes were lined with a white eyeliner.
She arrived hand in hand with her husband, Nick Jonas, very much the picture of a couple in love.
Nick wore an all-white suit and looked like an Italian mafia overlord with his thin, fake moustache.
Priyanka's jewels were by Chopard, and she was styled by Mimi Cuttrell.
Priyanka and Nick gazed into each other's eyes and shared sweet nothings, sending the paparazzi into a tizzy.
In 2017, the two had met at the same event and fallen in love.
Deepika Padukone showed up in a pink ball gown designed be Zac Posen.
She wore her hair big and puffy, with a pink hairband.
She sported dark lip colour and matching eye make-up, complete with glitters.
She completed her Met look with large earrings and a silver bracelet.