Gigi Hadid Gave Cara Delevingne a Booty Tattoo!

Gigi Hadid shows off her rock hard abs as she heads to her apartment on Tuesday (July 5) in New York City.

The 21-year-old model vacationed and partied with BFF Taylor Swift over the Fourth of July Weekend.

PHOTOS: Check out the latest pics of Gigi Hadid

While Taylor‘s squad partied, Cara Delevingne took to Instagram to show off her extremely patriotic butt tattoos! Gigi is pictured painting an American flag on Cara‘s rear and honored Cara‘s homeland England with a British flag on the opposite side.

Check out the cheeky picture below!

25+ pictures inside Gigi Hadid arriving back in NYC…