What doesn't stay in Vegas

Don't believe those travel ads. What happens in Vegas, doesn't always stay in Vegas. Just ask Britain's Prince Harry. Here are some other celebrities who can tell you how their Las Vegas escapades ended up making tabloid headlines

Bruno Mars waive his preliminary hearing on felony drug possession charges at the Clark County Regional Justice Center, Feb. 4, 2011, in Las Vegas. After a September 2010 concert at the Hard Rock's Wasted Space nightclub, a bathroom attendant noticed Mars was taking a long time in a stall accompanied by a little bag of white powder. A security guard confronted him as he left, and Mars ended up getting probation and community service for a cocaine charge. All this happened as his song "Just the Way You Are" climbed the Billboard charts.

Paris Hilton poses with her customized t-shirt by 'Shout Out' — Charley Gallay/Getty Images

Paris Hilton, surrounded by guards, arrives at the Clark County Regional Justice Center Sept. 20, 2010, in Las Vegas. In 2010, a police officer stopped the car Hilton was riding in after noticing a "vapor trail" of marijuana smoke wafting from the windows. Once inside the Wynn resort on the Strip, Hilton reached in her Chanel purse for lip balm but ended up dropping a small bag of cocaine right in front of the officer. She told authorities it wasn't hers and she thought it was gum. She later struck a deal with prosecutors, pleading guilty to misdemeanor drug possession and misdemeanor obstructing an officer and serving one year of probation.

95576665.jpg_VEGAS.jpg — Ethan Miller/Getty Images

The Lloyd D. George Federal Courthouse is seen on Jan. 4, 2010, in Las Vegas. Call it karma, but David Schubert, the assistant district attorney who prosecuted both Mars and Hilton, was arrested in March of 2011 on charges of buying crack from a street dealer near the strip. According to published reports, the street dealer arrested at the scene later told cops Schubert was a regular customer. Schubert pleaded guilty and was sentenced in February of 2012 to nine months in jail.

Britain's Prince Harry gives a thumbs up during the award ceremony after playing a charity polo match in Campinas, Brazil, March 11, 2012. — AP Photo/Andre Penner

Britain's Prince Harry gives a thumbs up during the award ceremony after playing a charity polo match in Campinas, Brazil, on March 11, 2012. The third in line to the British throne, Harry played a game of strip billiards in his Las Vegas hotel suite in August of 2012, only to find that someone leaked blurry photos of the naked royal cozied up to an apparently undressed mystery woman. Prince Harry's office confirmed that the photos were of the prince, but declined to make any further comment.

142977880.jpg_GSA.jpg — Chip Somodevilla/Getty Images

Government Services Administration Chief of Staff Michael Robertson, right, hears from his attorney while testifying to the House Oversight and Government Reform Committee on Capitol Hill April 16, 2012, in Washington, D.C. A group of GSA employees got some unwelcome fame when the goofy skits they prepared for a lavish Las Vegas conference in October 2010 ended up on YouTube. A congressional panel wasn't as amused by one employee's ditty about never getting audited by the inspector general. Heads rolled when word got out that the $820,000 event included a taxpayer-funded clown, mind reader, and 24 unassembled bicycles for a team-building exercise.

Singer Britney Spears performs on stage during the Billboard Music Awards on May 22, 2011, in Las Vegas. Spears walked down the aisle in a Las Vegas chapel in jeans and a baseball cap in 2004. The pop princess ended up waking up in Vegas next to her childhood friend and decided she should trim that whole "till death do us part" thing to just 55 hours of wedded bliss.

Entertainer Wayne Newton appears during a court hearing at the Clark County Regional Justice Center on Aug. 1, 2012, in Las Vegas. Newton and developer Steve Kennedy have traded allegations of breach of contract, fraud, mismanagement, animal abuse and sexual harassment over a plan to turn the Casa de Shenandoah ranch into a tourist attraction.

Boxer Floyd Maywether Jr. is led away in handcuffs at the Clark County Regional Justice Center as he surrenders to serve a three-month jail sentence at the Clark County Detention Center on June 1, 2012, in Las Vegas. Mayweather pleaded guilty in December to attacking his ex-girlfriend while two of their children watched in September 2010.

O.J. Simpson ay his sentencing at the Clark County Regional Justice Center Dec. 5, 2008, in Las Vegas. — Issac Brekken-Pool/Getty Images

O.J. Simpson, center, speaks in court prior to his sentencing at the Clark County Regional Justice Center Dec. 5, 2008, in Las Vegas. Simpson and co-defendant Clarence "C.J." Stewart were sentenced on 12 charges, including felony kidnapping, armed robbery and conspiracy related to a 2007 confrontation with sports memorabilia dealers in a Las Vegas hotel.