'OITNB' star Ruby Rose shows off tattoos in string bikini

Ruby Rose has some sweet ink, and she's not shy about showing it off.

The "Orange Is the New Black" star's tattoos were on full display as she rocked a small black bikini while on vacation in Formentera, an island off the coast of Spain.

The 29-year-old Australian actress has been hanging out with her super gorgeous friends on a boat in the middle of the ocean, because she knows how to have a fun vacation.

WATCH: BFFs? Justin Bieber and Ruby Rose Compare Arm Tattoos Over a Cozy Dinner

She also knows a thing or two about getting amazing tattoos. Her vast collection appears to include a unicorn on her leg and Sterling Archer, the super spy from FX's "Archer," on her stomach.

MORE: 17 Reasons Why "Orange Is the New Black" Star Ruby Rose Is Your New Girl Crush

Recently, Ruby Rose met Justin Bieber -- who she called "her brother" because her "OITNB" character is called Bieber -- and the two compared their ink. Check out the video for more on the star's wild tats.

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