Gigi Hadid snacked on "chips and guacamole" at Taylor Swift's Halloween party.

Taylor Swift's Halloween Party (c) Instagram

Taylor Swift's Halloween Party (c) Instagram

The 21-year-old model has revealed her "little girl's night" at the 'Bad Blood' hitmaker's home was "really cool" and laid back, because she and fellow guests including Camila Cabello, Martha Hunt and Lily Donaldson got to have lots of fun and treat themselves to some junk food.

Speaking about the event on the 'Today' show on Wednesday (02.11.16), the blonde beauty - who is currently dating 'Pillowtalk' singer Zayn Malik - said: "Halloween was really cool. We were all working, so my friend had just a little girl's night at her house.

"We had like chips and guacamole and pizza."

And the catwalk icon, who dressed as a girl scout for the party, has revealed she did have a "really really intense costume" she had planned to wear for Halloween, but changed her mind because she wanted to save the outfit for a later date.

She explained: "I had a really, really intense costume planned and then I was like maybe I'll save it. So, then I found a Cub Scout shirt in Japan at a vintage store and I made a costume out of it."

Although Gigi's attire wasn't what she had originally intended to wear, she has taken to social media to thank her friends for their assistance in styling her for the 26-year-old singer's do.

Alongside a picture of her sporting emerald green velvet trousers, a denim shirt with braces, a red patterned scarf and a tan hat, which she shared on her Instagram account, she wrote: "Scout's Honor thanks to my fwends@erinparsonsmakeup @nailsbymarysoul@raisingkaned, who play dress-up with me on the reg, for helping me pull together a look after work !!! HAPPY HALLOWEEN (sic)."

Taylor - who borrowed Ryan Reynolds's Deadpool costume from the film of the same name for her costume - has also taken to Instagram to show her and her friends posing in their costumes.

She wrote: "Happy Halloween from Deadpool, a Cub Scout, Martha Brady, a space cadet, a granny with a lost cat, black swan, and a birthday girl dressed as a cat Happy birthday @kennedyrayee WE LOVE YOUUUUUU (sic)"