Where was your fave five years into his/her career? Was he/she still successful?
5 years into her career, Rihanna had 4 numbers in 2010, released a 6 million selling album.
What about your fave?

Speak Now (4 years into her career) sold over 1m first week.

Taylor had released three consecutive albums which sold over 6M copies WW.

To date, she has 5 albums which achieved that.

She released her 9th and 10th #1 singles and her 4th studio album that went on to sell 25m copies.

Truly the Queen of the 90s

Britney was releasing her 4th consecutive #1 album In The Zone which sold 8M WW. She also released the Grammy award winning Toxic which reached #1 in many countries it charted along with WW #1s Me Against The Music and Everytime

Who is this?

In 2013 Gaga finished a MASSIVE $184 million grossing tour and released a #1 album at the end of the year.
She became the first female to score 3 #1 albums this decade in the US a few months later.

worldwide superstar, queen of UK, queen of US, queen of Barbados, and queen of australia

Mariah

In 2012 Gaga was on her massive worldwide Born This Way Ball Tour

She was a nobody trying to fight a producer to get out of her contract

She was having a lot of success with her number one single Roar

He released his now 6x platinum album My Way which garnered 1 #1 and 2 #2s

She received three Grammy nominations.

Slaying