This isn't your 1950s bubble gum and poodle skirts rock 'n roll. The Viva Las Vegas Rockabilly Weekend - now in its 18th year - is a flashback to classic cars, vintage pinups, Tiki drinks, tattoos and a fashion aesthetic that balances high heels with just as high hair. 'It's good clean fun, with a hint of naughty,' said Tara O'Hara of Chicago. Around 20,000 fans of the era gathered over the weekend for musical performances and car show off the Strip at The Orleans Hotel and Casino. Scroll down for video . Dressed to impress: In this April 5 photo women wait in line before taking part in a bathing suit contest at the Viva Las Vegas Rockabilly Weekend in Las Vegas - many of the attendees of the weekend wear vintage clothes . Elvis fan: Wind blows the hair of Carl Schreiber during a pool party - he jetted in from Chicago for the event . Sitting pretty: A woman who goes by Martha War sits by the pool - the Rockabilly Weekend  is a flashback to vintage pinups, Tiki drinks, tattoos and a fashion aesthetic that balances high heels with just as high hair . Smoking hot: The Viva Las Vegas Car Show is pegged as 'the best car show of its type anywhere' 'It's the culture, the lifestyle, the attire, the cars, the music and the old mannerisms,' says Tino Pacheco of Rialto, California when asked what attracts him to rockabilly. At the center is rock 'n roll. Publicist Alisha Alexander says the retro weekend has grown so large, organizers have added a second music-only event - the Rockabilly Rockout - in October at the Gold Coast Hotel & Casino that harkens back to the event's roots. 'It's gotten a lot bigger. You have people from all over. Germany, Austria, Mexico, Italy,' said Pacheco who attended the weekend for about 15 years. 'A lot of us come here to keep the culture alive, to keep it going. And that's what makes it unique.' Ready for our close-ups: Marilia Skraba, center, of Brazil, applies make-up while waiting to compete in the Miss Viva Las Vegas contest . On the look-out: Chelsea Spirito, left, reacts as she watches a men's bathing suit contest at the Viva Las Vegas Rockabilly Weekend . Making their moves: People crowd the dance floor at a jive dance class during the retro-themed festivities . Crowd-pleaser: The One and Only Inga performs during a burlesque show - people started lining up over an hour before to make sure they had seats to the performance . Booted and ready: Susanna Raphael Wellbourne of the burlesque duo Kitten and Lou rests backstage during a burlesque show . Candid: A woman dances at the Viva Las Vegas Rockabilly Weekend - The swing, jive and two-step dominated the dance floors at the event . Making new friends: Zack Simpson, right, and Dollie Simpson dance during a jive class - Dance classes were held for Bopping, Jiving, Strolling and the Texas Two-Step . Non-stop entertainment: Angie Almilla kisses Eric Martinez while waiting in line for a pool party . Traveling from far and wide: Rebecca Skehan, left, and Mark Skehan drink beer while listening to live music - the music was a big draw for the couple, who came from Australia to attend the event . Family act: A festival attendee poses in front of a retro car with her baby daughter wearing matching attire - bar the killer heels . Maximum capacity: Publicist Alisha Alexander says the retro weekend has grown so large, organizers have added a second music-only event . Summery look: Temperatures in Las Vegas over the weekend were around 70 degrees Fahrenheit .
The Viva Las Vegas Rockabilly Weekend is an annual four-day music festival that takes place over Easter .
It also puts on North America's biggest pre-1960's era car show .
An estimated 20,000 attendees flock to The Orleans Hotel and Casino for the event each year .