The "Grand Theft Auto 5 bikini girl" picture has been floating around the internet since Rockstar announced the latest installment. So who is the hot blond bikini babe in the Grand Theft Auto 5 ads?

The answer comes from the same spot all the answers to life's big questions seem to emerge these days -- Reddit.

Many people assumed the girl in the photo was a doctored and cartoonized Kate Upton. Others guess it was Candice Swanepoel. Good guess but both incorrect. The actual answer is Shelby Welinder.

Shelby was hired by video game producer Rockstar through her agency to model for the advertisement in the fall of 2012. Shelby did an interview about the photo back in 2012 so finding the answer wasn't exactly that difficult.

Rockstar Games / Instagram

So "who is Shelby Welinder?" would be the next great question that needs answering. According to her Twitter profile Shelby is a "model, adventurer, Londoner, globetrotter, occasional actor and dog owner." You can see more hot photos of Shelby, just like the pics below, on her Instagram page.