Taylor Swift, Carrie Underwood Make Forbes Young & Rich List

Taylor Swift and Carrie Underwood work hard for their money -- and it shows. The two young superstars both ranked on Forbes' Best Paid Celebrities Under 30 list, joining an all-star cast.

Not surprisingly, Lady Gaga topped the list by grossing $170 million. She is followed by the youngest celeb to make the roll, 17-year-old teen heartthrob Justin Bieber, who raked in $53 million. Miami Heat star LeBron James came in third with $48 million, fourth place went to tennis star Roger Federer with $47 million, while Taylor rounded out the top five with $45 million.

Carrie brought in a cool $15 million, which placed her in the No. 19 slot. Other celebs on the list include Katy Perry with $44 million, Rihanna with $29 million, Robert Pattinson and Kristen Stewart who tied with $20 million and Miley Cyrus who earned $15 million.

Taylor seems to be earning a permanent spot on Forbes lists. The 21-year-old has placed on their annual Celebrity 100, Highest Earning Women, Most Powerful Celebrities and their Highest Earning Stars lists. In spite of her big paychecks, the humble star says her bank account isn't the biggest perk of her job.

"I feel like out of all of the things that have happened to me in my life, [my fans] are the best thing that I've ever gotten to have," she tells The Boot. "My relationship with them is everything to me, and the fact that this was the by product of that, it makes it that much more beautiful."

Taylor is in the middle of the U.S. leg of her Speak Now World tour. Fellow country music millionaire, Mrs. Mike Fisher, is spending the next several days in Australia promoting her 'Play On' album, as well as her new film, 'Soul Surfer.' Next, she will head back home to Nashville, Tenn. to work on a new album.