Britney Spears - In the Zone era (?) / Oops! era (?)
Beyonce - I Am...Sasha Fierce era
Lady Gaga - The Fame Monster era
Rihanna - Good Girl Gone Bad / Loud era
Katy Perry - Teenage Dream era
Adele - 21 era
Britney's peak is bigger than any of them. She literally ran the world for her first two albums and remained a huge seller well into IN THE ZONE. It wasn't until he who shall not be named took Britney's career, body, and mind away that she began to fade. She has the potential to regain it all, but she seems content where shes at. Britney has sadly peaked. I don't see her selling big album wise anymore.
Britney, Bey, Gaga, and ADELE have all peaked for sure.
Rihanna & Katy are iffy. Neither have truly had an album sell HUGE amounts so you never know. I don't think Katy will ever have an era where the singles are successful as the TD ones were, but she may sell more & make more on tour for a certain era.
Every artist has a peak era—that's the whole definition of a peak. And considering most artists are never bigger than their debut/breakthrough single and album, it would not be shameful to say that all these ladies have probably peaked. Even if they never match their previous success, they can still have fantastic careers.
ATRL March Madness 2013
Which Record of the Year winner is best of them all? Now Playing:WINNER!
Lady Gaga and Katy Perry still have potential.
Adele recreating the success of 21 is almost impossible.
Britney peaked years ago. That ship has sailed.
I think that Beyonce's most recent album was her best, and with new inspirations such as her new baby I think that she has the potential of bettering it.
I thought Rihanna had peaked with Umbrella, (single wise), then OG smashed my ears. I then thought she had peaked again, until We Found Love romped her entire discography. She's so unpredictable.