Jeff Bezos' fiancee Lauren Sanchez flaunts her VERY toned abs in a crop top as she hits the gym with billionaire founder

The mom-of-two, 53, shared a clip to her Instagram Stories as she worked up a sweat in the gym with a handful of others - including her husband-to-be.

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Jeff Bezos stole girlfriend Lauren Sanchez's trainer

Jeff Bezos stole girlfriend Lauren Sanchez's trainer

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billionaire Jeff Bezos' fiancée Lauren Sanchez, 53, beams in two piece flaunting toned abs