Soon, Las Vegas may bid adieu to its famous tagline 'What happens in Vegas, Stays in Vegas' . Recently, a popular rock band Aerosmith chanted a new tagline at a show and it seems like it has resonated with the city. The city tourism officials are teasing something that will be unveiled on the 26th of January. According to speculations, the new motto will be 'What happens here only happens here'. Aerosmith will reportedly be featured in the new ad campaign featuring the slogan.