You can only choose four. Go!

Rihanna
Adele
Taylor
Beyonce

Adele
Taylor Swift
Beyonce
Katy Perry (as much as I hate to say it)

I would put Rihanna as the fourth, but that is questionable after her recent singles.

wait

Taylor Swift
Adele
Katy Perry
Rihanna

I don't really consider Beyoncé a "pop girl" anymore. She's definitely one of the biggest stars, but her last album wasn't very pop and she doesn't do any promo, interviews, photoshoots, like most pop girls do. I don't really hear any of her songs from this decade on the radio, either.

They' all are tbh

Wendy
Wendy Williams
Wendy Hunter
Wendy Williams-Hunter

Everyone except Beyonce

Adele is the only main pop girl

I voted only for Gaga by mistake tho.

They all are

Katy, Taylor and Rih.

Gaga is over and Bey is barely pop, plus she's from the previous generation.

Beyoncè was half and half tbh.

Adele
Ariana
Ciara
Taylor

Beyoncé
Adele
Taylor
Katy
Rihanna

the concept of a main pop girl is sexist and ableist tbh

all of those in the OP are

Those with Grammy's are.

Remove Rihanna from the poll and add Adele.
Then its Gaga, Adele, Beyonce, Taylor. All of them are grammy winners

Yeah, it had a few pop songs like XO and Pretty Hurts.