They can be males or females it doesn't really matter and it's not about looks.
I'll begin.
P!nk

Gwen

Madonna

Hunter Hayes (not a popgirl but whateva)

Gaga is the Khalessi. Currently in her wandering the desert phase with her loyal band of stragglers.

How?

Bey would be Daenerys. naturally.
but how do you say it's not about looks and then make P!nk, Brienne?

gaga



florence



demi

I think Christina would be a great Cersei.

They're both assertive, powerful women and everyone already thinks Legend is a bitch anyways so if the shoe fits, wear it bitch.

Brit = Robert baratheon

Bey = Cersi Lannister

Gaga = Stannis Baratheon

Taylor = Danaeyrs

Katy = Renly, perhaps?

Dk bout anyone else

They're both brave and dont care aboyt what people think of them.
And no beyonce would be Tywin

This is based on their personalities and the vibes that I get from them, as well as their careers:

Katy Perry - Margaery Tyrell
Britney Spears - Robert Baratheon
Taylor Swift - Tyrion Lannister
Lady Gaga - Daenerys Targaryen
Christina Aguilera - Cersei Lannister
P!nk - Brienne of Tarth
Ariana Grande - Arya Stark
Madonna - Olenna Tyrell
Jennifer Lopez - Stannis Baratheon
Adele - Littlefinger
Beyoncé - Melisandre
Rihanna - Oberyn Martell
Miley Cyrus - Jon Snow
Iggy Azalea - Theon Greyjoy
Nicki Minaj - Robb Stark
Alicia Keys- Eddard (Ned) Stark
Azealia Banks - Varys
Lana Del Rey - Eddison Tollett (Dolorous Edd)
Gwen Stefani - Samwell Tarly
Shakira - Renly Baratheon
Carly Rae Jepsen - Sansa Stark

Mariah Carey is the most like Cersei Lannister tbh. Ariana is Margaery Tyrell.

Especially if you read the books.(Not to say Queen Mimi is crazy)

You guys keep calling people Cersei as if it's a compliment

I love Cersei but it really isn't