Dorothy Pomerantz, editing by Yahoo7 staff
The Hype
GALLERY: Forbes' Top Earning Celebs Under 30 -- Full List

It's somewhat ironic that Lady Gaga once again ranks as the Under 30 celebrity who earned the most money. This year the singer underwent something that is usually reserved for old people: hip surgery.

But of course Gaga's injury wasn't caused by decaying bones and muscles. She had a labral tear likely from the intense dancing she does during her shows.

And after her surgery the Mother Monster didn't just hide away to recover. She rolled out in a custom-made 24-karat gold plated wheelchair.

Lady Gaga's customised gold wheelchair. Credit: Terry Richardson

Those kinds of antics (and her massive social networking power) helped land Gaga in second place on our annual Celebrity 100 list. Her earnings put her at the top of this list though. We estimate Gaga earned $80 million between June 2012 and June 2013. She would have earned even more if she had been able to finish her tour.

Women dominate our list of the Top Earning Celebrities Under 30.

Seven of our list members of women. As in past year, we didn't include athletes who ranked on the overall Celebrity 100 to keep the list more Hollywood focused.

We talked to agents, managers, producers, executives and other in-the-know folks to come up with our estimates which include all entertainment-related income. We don't deduct for taxes, agent fees or the other costs of being a celebrity.

Justin Bieber on stage during his Believe tour. Credit: Getty Images

Most of the women on our list are pop stars who earn just as much as their male counterparts.

Yes, Justin Bieber is in second place with $58 million. But Taylor Swift is close on his tail. The 23-year-old singer songwriter earned an estimated $55 million last year ranking her third on the list. Swift's latest album, Red, sold 1.2 million copies in its first week. Those are almost unheard-of numbers in today's troubled music world. Swift also earns big from endorsement deals with companies like Diet Coke, Sony and Covergirl.

Lawrence is indisputably on the rise while another actor who makes our list, Kristen Stewart, may had already had her moment in the sun. With the final Twilight movie hitting theatres in November 2012, she earned an estimated $22 million ranking her ninth on our list.

Jennifer Lawrence attending the 2013 Comic Con over the weekend. Credit: Getty Images

But Stewart doesn't have anything big on the horizon that will keep her earning at the same level.

Like many child actors who earn a ton from franchises, she's now taking advantage of her earnings and fame to do smaller movies like the recent On The Road. Based on Jack Kerouac's famous book, the movie only ever opened in 107 theaters and grossed $8.7 million. Compare that to Breaking Dawn 2 which opened in 4,000 theatres and grossed $830 million.

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Dorothy Pomerantz writes for Yahoo! Music on behalf of