Obviously Beyonce's.

Beyonce - The most Grammy's in a night, Single Ladies >>>>>>>>>>>>>>>>>>>>>>>

Born This Way is GaGa's 2nd album.

Born This Way is Gaga's second album.

Britney!!

For sure, this is Beyonce.

And that's not the stan in me talking, it's the logical and obvious answer.

Britney Spears - Britney

And it's not even my stan vein voting. This album, this Britney Spears' era changed the music industry. "I'm a Slave 4 U" is a classic and has the sexiest video of all time. So I guess it's pretty obvious.

I see Britney stans are on a roll today!

Britney & Beyonce.

Thank god Gaga doesn't have a 4th album yet, so you guys can't make another thread about it.

She doesn't even have a third album yet.

Yet Britney's album inspired all the other teen-pop acts (Justin, Christina, Mandy, Jessica, etc.) to say goodbye to teen-pop and move on to something more mature.

ALL DUH SINGLE LADIES!

Britney >>>>>>>>>>>>>>>>>>>>>

I'm A Slave for U HELLLLLLLLLLLLOOOOOOOOOOOO

Im A Slave 4 U song, music video, and VMA Performance left a huge impact in pop culture. Taking those 3 things into consideration, it beats Single Ladies.

Not to mention Britney sold 10 mill WW.

I Am... Sasha Fierce. Easily.