She's known for her trademark strut down, walking in some of the most awe-inspiring fashion shows around the world.

Barbara Palvin, 23, proved modelling isn't always filled with glitz and glamour as was forced to improvise a quick change out in the open during her sun-soaked photo shoot in St Tropez, France on Tuesday.

The braless Hungarian supermodel appeared to have no qualms as she changed her in her designer maxi dress with the help of a stylist by the French port. 

Working her brunette tresses into a voluminous ponytail, she accessorised her barely-there love with a pair of cat-eye shades that brought a kooky edge.

Later, she displayed her gym-honed curves in a sizzling red mini dress which accentuated her narrow waist with the help of a thick gold rope belt.