Shania Twain arrives at Caesars Palace Las Vegas on horseback on Nov 14. (PRNewsFoto/The Colosseum at Caesars Palace) What happens in Vegas doesn’t stay in Vegas when what ‘happened’ happened as a publicity stunt. Singer Shania Twain arrived in style, leading 40 horses down the Las Vegas Strip as an early kick-off to her upcoming “Shania: Still the One” show opening for a two-year run on December 1st at Caesars Palace. The first-ever horse stampede stopped traffic as Twain made her way to The Colosseum.