The Biebers are pulling out all the stops during their summer trip to Paris.

Justin and Hailey, who stepped out Monday night for a date night in the City of Lights, dressed to the nines, with the model, 24, in a backless LaQuan Smith dress that featured wraparound detail and the Canadian popstar, 27, wore a suit and sneakers.

Along with her dress, Hailey wore open-toe heels, a neat bun, stylish sunglasses. When her back was turned, cupping bruises were noticeable on her back. Cupping is a therapy that increases blood circulation to the area where the cups are placed.

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Photo: Getty Images
Photo: Getty Images
Photo: Getty Images
Photo: Getty Images
Photo: Getty Images
Photo: Getty Images

The pair were on their way to meet with French President Emmanuel Macron.

Bieber even documented the visit on Instagram, sharing a photo of their meeting with Hailey, Macron and his wife Brigitte Macron.

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Hailey and Justin have been in Paris for a few days, also seen stepping out to dine at Le Stresa restaurant.

The stunner wore a stylish midi dress while Justin went casual in a Drew hoodie.