Ashanti in Canada.

Not counting Adele as a pop girl, it's Rihanna in my country. Other big names here are Bey, Taylor, Katy and Sia.

Barbra Streissand

Taylor Swift

Katy Perry.

Rihanna and Shakira

So the biggest foreign act?

If that's what you mean, in America it's Adele. Overall it's Taylor.

I live in the US so Adele, judging by album sales. Taylor going by singles/tour recently.

I'm from Mexico and Katy rules there from the English speaking ones. PRISM sold almost 200k and she toured there.

In Mexico if I don't count Shakira then it must be Adele, her album and single sales are huge for a foreign act.

Taylor Swift

Beyonce in the USA
Adele also, but Beyonce gets more news & media coverage.
Gaga is considered big too but she kind of off the radar rn.
Rihanna tooo!! she's big NOW

Eh, I suppose by album sales alone. Katy's far more balanced though-albums, singles, tour. Before Katy and Adele, it was Gaga

Maybe Ariana.

Taylor is the biggest in a lot of countries it seems

Girl, Adele's 3 album have sold over 2.5 million and she has 3 singles with sales exceding 1 million. I don't need to live there to know who's bigger, the receipts speak for themselves.

Yeah, Gaga was huge back in 2010-2011. Adele is yet to tour here, she is coming in November but so far it is looking like she is gonna slay in that department.

In the US currently I would say Ariana Grande, Taylor Swift, Beyonce, Rihanna & Adele

All the UK members seem to agree that Rihanna is the biggest there so. Sales is not the only important thing

I am from Mexico... and let me tell you, after Hello NO ONE EVER talks about her, you don't even listen to her on the radio. RIGHT NOW Ariana is pretty big even tho artists like Maluma, Thalia or stuff like that are bigger but that's because they are local.

Rihanna I think.