Gigi & Bella Hadid Hold Hands at Rihanna's Met Gala After Party 2015

Gigi Hadid rocks a sexy black ensemble while heading to Rihanna‘s Met Gala After Party at Up & Down on Monday (May 4) in New York City.

The 20-year-old model was seen holding hands with her younger sister Bella, who joined her for the outing.

PHOTOS: Check out the latest pics of Gigi Hadid

Earlier in the day, Gigi was red hot while posing with Karlie Kloss on the red carpet at the Met Gala.

“My #MetGala best dressed tonight were @Zendaya and @KimKardashian.. I was like,” Gigi tweeted on the same day.