Gigi & Bella Hadid Attend 'Being Serena' Premiere in NYC!

Gigi and Bella Hadid are all smiles as they arrive at the premiere of Being Serena on Wednesday night (April 25) at the Time Warner Center in New York City.

The newly 23-year-old model looked super chic in a gold suit suit while her 21-year-old model-sister kept things casual in black suit and white sneakers as they supported tennis star Serena Williams at the premiere of her new docu-series.

PHOTOS: Check out the latest pics of Gigi Hadid

The night before, the sisters looked super glam as they stepped out to celebrate Gigi‘s birthday!

Part one of Being Serena premieres on HBO on 10/9c – and you can watch the trailer here.

15+ pictures inside of the sisters at the premiere…