The 21-year-old supermodel showed up at the event wearing a pair of very tight white, high-waisted trousers and a plunging black bodysuit.
She kept her hair and make-up simple too, opting for a high ponytail and some cat-eye eyeliner.
Gigi, who's in a relationship with ex-One Direction singer Zayn Malik, was there to promote her Tommy x Gigi collaboration with Tommy Hilfiger and she was certainly the centre of attention.
But she only had eyes for her family, who travelled to the launch from Holland to surprise her.
She posted an adorable photo of herself with her clan on Twitter, captioning it: "WOW! @Zalando_Press surprised me & brought my family out from Holland for the Euro launch of #TOMMYXGIGI! THANK U❤️".
It looks like no matter how famous you are, nothing beats a hug from your family!