Kim 'n Kris are getting wet and wild!

As detailed in the new Us Weekly, Kim Kardashian and Kris Humphries celebrated their Aug. 20 wedding in private with a last-minute, ultra-private honeymoon on Italy's Amalfi Coast. Soon after arriving at their $3,300-per-night suite (dubbed the "Romeo and Juliet chalet"), Kardashian, 30, and Humprhies, 26, put up a "Do Not Disturb" sign outside their door.

The happy couple eschewed local tours for lots of alone time -- including PDA-packed time in the sun and the pool!

"They were giggling and splashing like kids," an onlooker tells Us. "Kris threw Kim in the pool!"

"Our honeymoon was so perfect!" Kardashian told Us afterwards. "We caught up on alone time."

Watch the couple -- stripped down to their bathing suits -- taking in the stunning Amalfi scenery and get way, way cozy in the pool.

Check out the exclusive video now -- and pick up the new Us Weekly on stands Friday for more photos and juicy details.