Say cheese: Rihanna was surrounded by photographers keen to get a snap of her latest outfit Hours earlier the songstress quite literally shut down the red carpet in a huge yellow gown - by Chinese couture designer Guo Pei - that left little space for anyone else at the Met Gala.
The pop starlet made quite the entrance on the red carpet in a stunning yellow cloak by Guo Pei before changing into a red bustier dress by Stella McCartney once inside.
But her transformations didn't stop there.