Nicki probably. I don't think Katy will underperform, at least not yet. I feel like she'll have a great lead and start because her name is attached to it, the rest will depend on the music.

Gaga might as well. She really has to attract the public this time, and her artistic vision sometimes can get in the way of that. (Which is a good thing, but she is a popstar after all)

Rihanna has Anti.

Beyoncé is next.

From the other 3 that haven't underperformed I think Katy is the most likely to underperform but I hope I'm wrong.

Expect with Gaga, I agree.

Those platinum singles didn't flop A flop is a single that doesn't even sells 500k.

Not to mention Unconditionally isn't part of her last 3 singles, Dark Horse is. Birthday failed to go top 10 just becase of the video and This Is How We Do did bad on radio just because they wanted Walking On Air

I has nothing to do with the music itself

I feel like Katy would be next, tbh.

She needs to bring a new sound. Something pop hasn't heard yet maybe, or reinvent an old sound to modernize it.

4 does not compare with the other albums in the OP, like not at all. And Katy may underperform next era

Katy since her formula started to not work anymore
She cant rely on universal topic song with cute pop production, like Unconditionally and Birthday anymore
She needs to do something different like Dark Horse

Rihanna and Anti.

I know it doesn't but ATRL disagrees tho.
That's why 4 is on the list

Rihanna then Katy (I don't think she's capable of creating something brand new. She's more of a band-wagoner) then Nicki

Bey will be fine, Gaga will be much better than ARTPOP because her image is clean as a whistle and her music will be great.

Yeah, no hate, Anti is an ok album, but it definitely underperformed, lol. OP is fooling no one.

Overall, from the list of those who haven't yet, I'd say Katy is most likely to underperform next - her last two singles kind of flopped for her standards and Demi's Katy Perry sound-alike song CFTS didn't do as great as it could have. IDK, I feel like her signature sound just isn't the tea anymore, she needs to reinvent or something. Plus, I definitely don't see Adele or Taylor flopping in the near future considering how well things have gone for them over the years.

Iggy Azalea

Probably Katy, especially if Dr Luke loses the court case and she loses the producer that made her who she is today.