Jen Selter put her best assets on display in Mexico this week ... and TMZ Sports has the pics!!!
The uber-popular fitness model put on a pink bikini and hit the beach in Cabo San Lucas ... and braved the waters for an impromptu photo shoot.
We're told Jen spent the past few weeks on vacation in Mexico ... but, as you can see, she took a break from her break to hit the beach for some snaps.
No sign of Jen's NOT-boyfriend and former Big Time Rush singer, James Maslow, this time around .