Lindsay Lohan: Boobs Ahoy! Major Spill on Yacht Trip (PHOTOS)

Lindsay Lohan is just barely holding it together ... and the 'it' we're referring to is her rack.

LiLo had way too much confidence in a strappy black wrap Saturday as she ventured out on the island of Sardinia. She's still yachting around Italy with friends during her getaway from fiance Egor Tarabasov.

As we first told you ... Linds thinks they can work things out after their blowout fight in London, and you can see she's still flashing her engagement ring.

No doubt, it's gonna be a struggle ... for those tassels! Damn.

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