Rihanna served as a co-chair and showed up as a high fashion pope to the 2018 Met Gala. Her bejeweled Maison Margiela by John Galliano look came complete with a large bejeweled crown. Closing out ...

As excitement around the Met Gala continues to rise ... Past guests have included everyone from Rihanna and Lady Gaga to Blake Lively and Kim Kardashian -- all wearing unforgettable looks.

Rihanna certainly knows how to make an entrance. The mogul and A$AP Rocky made their Met Gala arrival together, of course. The boys had their booties and backsides ...