Attributes:
Voice: Gaga
Looks: Cheryl
Style/ Image: Taylor Swift
Choreography: Britney (Pre-2007)
Song Writing: Ke$ha
Personality: P!nk
Discography: Kylie
Videography: MJ
Tours: Gaga
Longevity: Beyonce
Sales: Adele
Endorsements: Rihanna

Impact: Madonna
I couldn't decide for Gaga... so she got two.
She's a bad bitch like that...
If you had:
The angelic (sometimes) voice of Gaga
The goddess-like looks of Cheryl
The innocent teenage appeal of Taylor
The mad dance skills of Britney (Pre-2007)
The fun, party lyrics of Ke$ha
The badass IDGAF attitude of P!nk
The amazing and beautiful discography of Kylie
The flawless videos of Michael Jackson
The breahtaking and sold-out tours of Gaga
The staggering longevity of king B
The huge sales of Adele

The endorsements of RihRih (Beyonce already took Longevity)
& The cultural impact that Madonna has had over the last three decades
In one pop-star, every lessor girl would bow down. It would be perfection imo.