It's the biggest event in the fashion calendar for the famous to show off their flamboyant and elaborate sides.
And last night's Met Gala was no different, particularly thanks to the 2019 theme, Camp: Notes on Fashion.
Some celebrities totally nailed it - Lady Gaga had four outfit changes and Katy Perry was dressed as a chandelier.
But others failed to get the memo - particularly Frank Ocean, who was ripped online for looking more like a security guard in a plain black outfit.
After photos started dropping of him walking the pink carpet, fans started tweeting jokes about his efforts, or lack thereof.
Was he trying to be ironic? Quite possibly.
But he certainly wasn't the only one to ignore the theme on the night.
Kanye West similarly wore a simple all black outfit, leading to fans flooding social media with similar jokes about looking like Met Gala security.
And there was a long list of other male stars who didn't take part in the fancy dress element, going for dull black suits instead.
