Hmmm. Janet?

Vocalist of her Generation ✔

Has 25+ million albums sold ✓
Has at least a top 10 from every single era ✓
Is talented ✓
Is the queen of pop vocal albums ✓

Amy didn't like Britney's music. However referring to Christina, she said she preferred her, is an amazing singer and that she loved her style.

Turned down a collaboration with Sia because she was shook. Told her to '**** off' and that she loved and respected her too much and wouldn't dare work with her.

Performed at a private party with Timbaland and Missy Elliott in the audience, citing them both as influences and idols. Furthermore, she wanted to work with the former and broke down in tears when she arrived home having met them backstage.

Didn't listen to her debut album Frank at all, not even once. Complained profusely that the production was fake, specifically the electronic strings. Management attempted to change her voice, wanted her to sound less common and more eloquent. This affected her relationship with the label until Back to Black.

Despite appearing to be covered in tattoos, she only had 11. Her style and throwback dress sense captured the attention of the fashion industry with Karl Lagerfeld stating that she was his muse. She also had a clothing line with Fred Perry.

Amy wrote most of Back to Black off-the-cuff taking 90 minutes with the title track and 3 hours for Rehab.

Won 5 Grammy Awards in one night - three for her bittersweet signature song, Rehab, and two more wins after her death, one unofficially for her movie which is the most successful documentary film in British history.

Her ashes are buried at Edgwarebury Cemetery in London.

You really live in the early 00s, don't you, D.M.F.? ✓

OT:

She's had a multi week #1 alongside two other top 10 hits and a successful album that has remained in the top 10 since it's release ✓

You wish. Only "hated by the GP" is true for her.

Isn't her Exhusband into men?
Doesn't she have a daughter.

It's kinda adding up sis.

Loves vagina ✓
Basic ✓

Winkly old and try hard ✓
Unknown in Africa ✓
Doesn't have remembered hits ✓

I'm on the kitchen floor 😂😂😭

The only female artist of the past 20 years to go over 30x platinum in albums in the US.
The only female artist to have #1 albums and #1 singles in the 90s, 00s and 10s.
Outsold her competitors who had stronger radio play and multiformats with more than 4 singles.
Despite not much radio play, has as many hot 100 #1s as her peers
The first of her generation to receive a VMA video vanguard...on top of that actually receiving a video vanguard
A grammy winner
A legend and an icon.
Influencing the late 00s generation as well as the 10s generation (see Gaga, Rihanna, Katy, Miley, Taylor, Demi, Selena and current hitmaker Meghan trainor (her homage to Trouble for me making her the #1 female on itunes currently)

Of course, Britney

Tours her house ✓
Scored a top ten for three days ✓
Debut album has been charting for four years in a row ✓
Started the flower crown trend ✓
79 on metacritic ✓

Legend X is the reason I'm still alive today. #FIGHTER ✓

Her love is a revolver ✓
Her sex is a killer ✓
She wants to know if you wanna die happy ✓

Competed on Season 9 of AI and was cut before lives ✔
Released an EP independently, solo written and produced ✔
Sold 70k first week, more than some singles artists ✔
Is a natural brunette ✔
Gay ✔