Gigi Hadid celebrated her 20th birthday party with a secret bash involving her boyfriend Cody Simpson, her family, and her besties! To ring in her special day, the model had a private celebration in Hollywood, complete with a fabulous cake, photo booth, and unique hashtag (#OMGigi).

Maybe this is even where the "Flower" singer gave his girlfriend her early birthday present? Her big day isn't until later this week, but she must be celebrating early.

Click through to see cute photos from her birthday party (sadly, there was no sign of her BFF Kendall Jenner), and let us know which was your fave in the comments!

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