Generally speaking celebrities have big egos under the surface (and rightly so! They do some incredible stuff) and have been let down a lot of people but deep down inside they are just like you.
Send her some flowers or something IDK. Send her a letter and ask to be pen pals. Again I have no idea how much access you have to her, if any, but simple things are better than some massive attention drawing stunt. You also aren't just "dating" her, but her PR team. You do anything to jeopardise her brand like
>>23959412and you're as good as blackballed from ever interacting with her.
Have you thought about getting a girlfriend who looks like her? I'm sure you could put that as a requirement on a dating app or something.
Don't be an idiot.