She added the geotag of Golden, Colorado before uploading the scintillating photo on Monday.
She placed her right hand on the whip and raised the other hand to sweep her hair to the side.
Lexi had a fierce look across her gorgeous face as she stared directly into the lens.
Many of Lexi's 762,000 Instagram followers took notice of the soapy upload, and nearly 3,200 showed their support by tapping the like button in just over nine hours after it went live.
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Lexi's bottom half was visible in the second image as she was shown in a pair of skin-tight white jeans.