Everybody is banging on Taylor Swifts door, including A-list celebrities, hoping they can join the American role model on stage. Steven Tyler, Nelly, Mick Jagger, Keith Urban, Justin Timberlake – you name it! Julia Roberts and Joan Baez even crashed the party and danced along side Swift.

Rihanna is the few who won’t join Swift on stage. “I don’t think our brands are the same: I don’t think they match, I don’t think our audiences are the same,” Rihanna explained to the U.K. magazine. “In my mind she’s a role model, I’m not.”

As to why these A-listers are joining Swift onstage is another question. It’s about a fun time on stage with screaming tweens or making Monday morning news.