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Olivia Culpo and Christian McCaffrey stripped to their bathing suits and hit a Mexico beach … taking a vacay after a bitter Super Bowl loss.

The engaged couple headed down to Cabo San Lucas with 49ers tight end George Kittle, fullback Kyle Juszczyk and their wives Claire and Kristin … where they soaked up the sun in some pretty revealing bathing suits.

Check out the pics … the whole crew’s milling about on the sand before hopping in the clear blue ocean for a dip — lots of pecs and legs for all to see.

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Christian and Olivia seem pretty deep in convo in the water too — maybe talking about wedding planning … after all, they’ve been engaged for almost a year, so ya gotta imagine the wedding’s comin’ up!

On top of the Niners players and their significant others, Peyton Manning was also down in the same area … though as far as we can tell he kept his shirt on. He chatted up GK, KJ and CMC at a bar near the beach.

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All of this messing around in the water comes just a week after the devastating 25-22 loss to the Chiefs in the NFL’s biggest game of the year … the Niners’ second loss in a Super Bowl in the last five years.

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The whole trip seems to be one big healing retreat for the gang … with Claire, Olivia and Kristin even posting a video to OC’s TikTok about how much the L was affecting all of them — though they seem in decent enough spirits.

So enjoy those rays while they last Niners gang … the next NFL season is only a few months away!