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She also donned a pair of oversized white sports shorts over her sexy two-piece, holding onto one leg as she snapped some selfies.
Not forgetting to accessorise, the brunette beauty added a selection of stylish gold bracelets and wore her locks naturally wavy.
Relaxing: The French beauty, 19, paired her slinky bikini with a pair of white shorts
The model appears to currently be on a sun-soaked getaway with pals, however it is not clear where she is.
Sharing some glimpses into her trip to Instagram on Wednesday, Thylane was seen with a quad bike on some dunes and having tea.