The WTA tour is in Tokyo for the first Premier tournament of the fall season. Top seed Garbine Muguruza took a night off from her Adidas kit to rock Hugo Boss.

She was joined by plenty of other WTA stars, including Netflix and chill friends Madison Keys and Caroline Wozniacki.

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As well as US Open finalist Karolina Pliskova (and her date Belinda Bencic).

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Petra Kvitova got in on the fun as well.

Wozniacki beat fellow party goer Bencic in the first round, while Kvitova topped Madison Brengle to earn a second-round contest against Olympic gold medalist Monica Puig. Muguruza will open against recent US Open quarterfinalist Anastasija Sevastova.