So, it's pretty simple! You choose one song by each pop girl for it to become part of your fave's discography!
I thought about listing all of the pop girls, but it might be too long cause there are so many pop girls! Simply use the ones that come to your mind!

Here is an example. My fave: Xtina
Britney: Everytime
Mariah: Hero
Katy: Firework
Gaga: Paparazzi
Rihanna: Stay
Avril: I'm With You
Kelly: Because Of You
Just to name a few

Lady Gaga
"Express Yourself" by Madonna

ok..

Mess

Bedtime Story - to Lady Gaga

That edit
too bad the mods can see it
-----------

anyway

Candyman by Xtina

Anyway for Gaga I'd snatch:

Fighter from Xtina
ET from Katy ( )
Jump from Rihanna
Sweet Dreams from Bey

and Alien from Britney

Beyonce's Halo --> Wynter Gordon

Not gonna lie. I cackled

JoJo

Beyonce: Freakum Dress or Drunk In Love
Christina: Fighter
Ariana Grande: The Way
Taylor Swift: You Belong With Me
Demi Lovato: Heart Attack
Katy Perry: Firework
Miley Cyrus: Wrecking Ball

FAVE: Britney Spears

Christina: Keeps Gettin' Better
Beyonce: Naughty Girl
GaGa: Paparazzi
Rihanna: Skin
Mandy: I Wanna Be With You
Jessica: Between You & I
Katy: Legendary Lovers

Beyoncé:
SOS - Rihanna
Toxic - Britney
Gaga - rest of Telephone
Katy - Dark Horse
Miley - Wrecking Ball
Whitney - I Wanna Dance With Somebody
Madonna - Like a Virgin

Yeah Britney would slay that song.

I'd love to hear Rih's take on:

"Partition" - Beyoncé
"My Heart is Refusing Me" - Loreen
"Loved Me Back to Life" - Celine Deon
"Piece of Me" - Britney Spears
"Gimme More" - Britney Spears
"Wildest Moments" - Jessie Ware

My fave: Ke$ha
Steal:
Britney - Till The World End
Carly Rae - I Know You Have A Girlfriend
Demi - Skyscraper
Katy - Teenage Dream
Gaga - Sexxx Dreams
Lana - Video Games
Lorde - No Better
Madonna - Turn Up the Radio
Paris Hilton - Nothing in this World
Robyn - Call Your Girlfriend
Taylor - I Knew You Were Trouble

Mariah Carey

Kelly: A Moment Like This
Christina Aguilera: Keep on Singing My Song
Lady Gaga: Do What U Want
Rihanna: California King Bed
Madonna: Take a Bow

Beyonce steal: Diamonds, Wrecking Ball, Wildest Moment.

Britney

Xtina - Hurt
Gagz - TEOG
Beyonce - I Was Here
Mariah - Emotions
Whitney - her version of IWALY (she nailed this song already once -in a good way)

My favorite girl is p!nk so:
Xtina: fighter
Beyonce: pretty hurts
Britney: toxic
Katy: i kissed a girl
Rihanna: sos
Madonna: like a prayer
Gaga: papparazzi