Rod Stewart Rocks Caspian’s with Surprise Vegas Set

Photo Credit: Denise Truscello/Getty Images for Wolfie’s Whisky/Caspian’s Rock & Roe

There’s only one Sir Rod Stewart — and on Saturday night in Las Vegas, he reminded us exactly why. After bringing the house down with his sold-out “Encore Show” at The Colosseum at Caesars Palace, the two-time Rock & Roll Hall of Famer (and…