ElConquistador

If Lolly Licksalot doesn't have a trademark on her name, can anyone go out and trademark that stage name? If they do, does she then have to stop using said name or risk being sued?

To put it another way... If a model has an established name she has been using for years and someone simply registers that same name as a domain name and then trademarks it, does the model have any recourse? It could be cybersquatting right? When it comes to the trademark though, is it simply first come, first serve, and she didn't register her name as she should have?