Just who...is...bigger?

LOL nice one. The answer is Gaga.

Lady Gaga

The one who has a near 10xPlatinum album, two #1 albums and four #1 hits, not counting sold-out stadium dates (two London dates which grossed more than 1/6 of Katy's 124-date world tour)

Living in th UK myself I would have to say its pretty even atm, maybe katy being a little bit bigger

This gonna be good.

Why are people that aren't from the UK answering?

It's obviously Katy, no one really likes GaGa anymore

Katy right now. Radio doesn't play Gaga any more but continues to play Katy

Gaga's peak was obviously much bigger though.

The album of the decade was outsold by TD there
CG, TD, FW, ET, LFN, TOTGA, POM & WA >>>>> BTW singles

Who's bigger?

Well I would hope it outsold it there with all those singles.

Tell em.

Gaga.

Lol didn't TD sell almost the double of what BTW sold there? Bye.

Katy who?

wtf are you talking about?

I actually live in the UK Defo Katy her songs are still always playing on the radio no one really cares for gaga anymore