Paris Hilton is known for her jet-set lifestyle but things tend to go south when the heiress decides to travel by car. On Friday, Hilton was arrested in Las Vegas for possession of cocaine after police pulled over the SUV she was riding in. The socialite's beau was apparently behind the wheel but Hilton was taken into custody after the illegal substance fell out of her purse.

The Vegas bust is not the first time Hilton has run into trouble with drugs while driving. Here's a timeline of her substance-related issues behind the wheel:

»Hilton was [article id="1540341"]arrested[/article] on September 7, 2006 in Los Angeles for suspicion of drunk driving. The socialite's blood alcohol level was .08 percent, the minimum for a DUI charge in California.

»On May 4, 2007 the heiress was [article id="1558872"]sentenced[/article] to 45 days behind bars for violating her probation. Hilton told the judge, "I'm very sorry and from now on I'm going to pay complete attention to everything. I'm sorry and I did not do it on purpose at all."

»On May 16, Hilton's jail time was [article id="1559810"]trimmed[/article] from 45 days to 23 for good behavior, among other reasons.

»Hilton reported to jail on June 3, hours after attending the [article id="1561552"]2007 MTV Movie Awards[/article]. The socialite told MTV News, "I'm obviously a little scared right now."

»Hilton was ordered [article id="1562042"]back to jail[/article] on June 8 after being released early to finish out her sentence under house arrest. The star reportedly screamed "It's not right" before being escorted from the courthouse in tears.

»Hilton was[article id="1563367"] released from jail[/article] on June 26. The starlet was greeted by throngs of fans and paparazzi. "This is by far the hardest thing I have ever done. I have had a lot of time to reflect, and have already learned a bitter, but important lesson from this experience," she said in a statement.

»In July 2010, the heiress was [article id="164296"]detained in South Africa[/article] for possession of marijuana. The case was later dropped after authorities learned that another person in her group, and not Hilton, was smoking.

» Hilton was [article id="1646723"]arrested in Las Vegas[/article] on August 27 for possession of cocaine.