The actress wore the bizarre ensemble as she enjoyed a day at the beach on the Greek island of Mykonos.
It appeared Lindsay had chosen to forgo conventional swimwear as she enjoyed a dip in a white lingerie set.
The starlet put her ample bust on full display in the revealing number, which seemed to comprise of a thong bodysuit and a pair of lacy knickers.
With its plunging neckline, the former child star risked spilling out of her fitted bodice.
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The actress is currently holidaying in Mykonos
Mavrix/OIC
It appeared the star had forgotten her swimwear as she took to the waves in her undergarments
Somehow narrowly avoiding a wardrobe malfunction, Lindsay seemed happy and confident and she frolicked in the sea in her undergarments.
In true beach babe style, the Mean Girls star slicked her trademark red hair off her face.
She finished her daring look with gold Rosary beads.
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Lindsay wore a thong bodysuit with a pair of lacy pants
Lindsay has hung out with esteemed fashion photographers Mario Testino and Ellen Von Unwerth
It seems Lindsay is enjoying herself on the picturesque island and has been enjoying herself by hanging out with the great and good of the fashion world.