Kim and Rob Kardashian reunite as they go on a hike together

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Bruce Jenner — Cover-Up During Hot Malibu Hike (PHOTOS)

EXCLUSIVE

Bruce Jenner took a nature hike Sunday in Malibu … and and there’s something about his choice of clothing that seems to validate tales that he’s gone under the knife for breast enhancement.

It was downright hot this weekend in Malibu and everywhere else in So Cal.   Bruce was wearing shorts, but he bundled up almost completely from the waist up with a heavy…