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Here comes trouble.

Wild child of the modeling world Cara Delevingne has joined Selena Gomez in St. Tropez to celebrate the actress’ 22nd birthday.

In the lead-up to the “Spring Breakers” star’s special day on Tuesday, the photogenic duo was seen having a blast on board billionaire Alshair Fiyaz’s luxury yacht.

The former Disney star seemed to have started her birthday celebrations two weeks earlier, when she was spotted braless and day-drinking at Williamsburg hotspot The Bedford.

Earlier this month, Delevingne’s former gal pal, “Fast and Furious” star Michelle Rodriguez, was photographed hanging out with Zac Efron.

The rumored couple were in Porto Cervo, a seaside resort in Sardinia, Italy, spending their time making lip-synch dance videos with Italian entrepreneur Gianluca Vacchi.