Ireland Baldwin Shares Butt Selfie, Reveals Bra Tattoo

02/04/2014 12:27 pm ET | Updated Mar 06, 2014

Ireland Baldwin is working hard on her fitness, and on a budding modeling career.

On Sunday (Feb. 2), Alec Baldwin's gorgeous elder daughter, rumored to have posed for this year's Sports Illustrated Swimsuit Issue, gave the world a sneak peek into the hard work that might have made that possible.

Baldwin, 18, posted a photo to Instagram in which she's lifting weights at the gym. It would seem like the blonde took cue from Kim Kardashian's headline-making butt selfie, and opted for a shot from behind.

She captioned the photo simply: "#2014."

The next day, Baldwin posted yet another curious photo. This time, she revealed a tattoo on her inner left arm.

She later tweeted in response to the many commenters who disliked her ink:

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