It's not a bad thing at all. She's attractive and has a hot body, it makes sense that you'd develop a crush.
If you haven't already, you should follow her social media accounts and join any servers that she runs. That way you can get to know her better and she can get to know you better. Eventually, with a little time and patience, you'll get a chance to tell her how you feel. She may be famous, but that doesn't mean you can't develop a bond with her. You have a chance, as long as you play it cool and are respectful.
Meanwhile, be sure to pleasure yourself to her posts as often as possible. Even if its multiple times a day. This is not only to keep your motivation up, but to sate your desires as well. It's not good to keep those pent up~