The birthday girl, who turned 22, wore blue jeans, a hoodie, and a shiny orange bomber jacket.
Gigi wore a dark blue sweatshirt with light blue pants. Her blonde hair was piled on top of her head in a messy bun and large black sunglasses covered her face.
Bella's boyfriend was MIA for the b-day celebration. The model recently rekindled things with ex The Weeknd.
In fact, both supermodels rekindled things with their exes this year. Gigi got back together with Zayn Malik. The former One Direction member didn't crash the girls' dinner, however.
The sisters are finally back in NYC together after traveling for Fashion Week around the world. Most recently, Bella was seen drinking wine on the go with Kendall Jenner in Paris.
What do you think about Bella and Gigi's birthday dinner style? Let us know in the comments.