Obviously Lady Gaga.

Rihanna's arguably been the biggest radio presence in the U.S. over the last 3-4 years, but globally I'd say it's Gaga.

They are both famous. Who's the most famous as visually.. Rihanna's face is more noticeable. No shade to GaGa tho.

EDIT: The title and poll question is misleading they are both asking different thing. Bigger Star? They are both on the same level imo in terms of stardom.

The obvious answer.

Gaga

Let the stan wars commence!

Although I really love Rihanna, I'd have to say Gaga was a bigger star.

Gonna have to go with Rih

and imma say Rih, she's been around a lot longer and she has more albums, singles, etc.

Rihanna duhhh

Let's see where GaGa will stand in 5 years ... gonna be such a joke

Navy, Gaga hypnotized the world within 2 years, so let the world love her, this poll is hers. Yet, me and many many others will prefer Rihanna forever.

Exactly your questions are misleading?

Famous can mean so much things.

My two faves, but I choose Gaga

Amongst youths, Both are equally known, but when it comes to grandmothers, lady gaga is. And thats what famous means. Yes, i believe more people know Lady Gaga than Rihanna, but i can deal with it. And so shall the navy. And on the fifth day man was created and mammals and it was so.

This poll is actually more objective than ANY other poll on ATRL...

lol