Yes! That taught tush is property of Elisabetta Canalis -- George Clooney's ex-girlfriend!
The 34-year-old Italian stunner rocked a teeny tiny bikini at an L.A. pool this past weekend ... proving that George's loss ... was truly Steve-O's gain!
Then again, Clooney's banging Stacy Keibler these days ... so he didn't exactly lose either.
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