Couple: Kai Havertz and his girlfriend Sophia Weber (pictured) looked on cloud nine as they enjoyed a boat trip while on vacation in St. Tropez on Monday

The 22-year-old let her brunette locks fall loose down her shoulders for the outing while she also sported a white necklace.

Sophia was joined by a female pal during the boat trip as the pair were seen laughing and joking while on deck.

The beauty, who has over 150,000 followers on Instagram, also sported a pair of goggles as she went for a dip.

Kai showed off his gym-honed physique as he sported a pair of light blue shorts on the trip.

Holiday: The Arsenal footballer, 23, was making the most of his time off as he whisked his girlfriend away on the romantic excursion in the South of France

Fun in the sun: Sophia was joined by a female pal during the boat trip as the pair were seen laughing and joking while on deck

Stunning: Sophia looked nothing short of sensational as she displayed her incredible figure in a light blue bikini while working on her tan

The footballer, who is from Germany, looked in good spirits as he appeared to playfight with Sophie while they chatted with friends.

The couple occasionally share snaps together on social media, with Kai wishing Sophia a happy birthday back in March.

Radiant: The 22-year-old let her brunette locks fall loose down her shoulders for the outing

Relationship: Sophia has occasionally shared loved-up snaps to her Instagram alongside her beau Kai