Rihanna: 'Forbes' Top Earning Celebrity Under Thirty!

Rihanna holds on tight as she enjoys an inner tube ride in the ocean on Thursday (July 12) in Barbados.

The 24-year-old entertainer and her pals took turns getting in the tube and being pulled by a fast moving boat.

PHOTOS: Check out the latest pics of Rihanna

Rihanna just landed the number three spot on Forbes magazine’s Highest Paid Stars Under Thirty list!

The mag estimated she earned approximately $53 million between May 2011 and May 2012, largely through her concerts, major hits, endorsement deals, and her fragrance, Reb’l Fleur.

Taylor Swift, Justin Bieber, Lady Gaga, and Katy Perry round out the top five.