Gigi Hadid Jumps on Adidas Bandwagon

Gigi Hadid just gave Adidas a big boost.

Gigi was out and about in NYC Saturday in Adidas workout gear, adorned with some green ears.

As you know, Gigi's tight with Kendall Jenner, whose family has been wearing the brand a lot since Khloe hooked up with James Harden.

Adidas certainly got a Halloween treat.