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Ireland Baldwin has always been open about her life, posting tons of selfies on Twitter and Instagram, but it doesn't mean she agrees with all their policies, especially when it comes to women baring their breasts.

"To be honest, I think that it's so effing stupid, because there are boobs and nipples all over Tumblr, all over Twitter, all over the world. Just walk around and there are boobs all over life, and in great artwork, in classic paintings, and in sculptures; it's everywhere. Instagram is just behind the times," the 18-year-old model and daughter of Alec Baldwin and Kim Basinger told Cosmopolitan.com about Instagram's policy to regulate nudity.

Baldwin said she supports the #FreeTheNipple online campaign taken up by a lot of celebrities, including Rihanna, Scout Willis, Cara Delevingne, in part because she finds the policies sexist.

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"I had this conversation the other day with one of my best guy friends," she recalled to Cosmo. "I said, 'It's so unfair that you get to walk around with your shirt off all the time, and women don't.' It's weird, you know? I saw Scout Willis's whole thing she did, she walked around New York City topless. I think that's so awesome."

That said, Baldwin told Cosmo she is being more careful about what she posts.

"I'm starting to definitely think about what I post, especially in terms of my future, and work and everything," said the model who just booked her first solo campaign for Rampage. "I used to be a bit more careless, but now I definitely sit there and really think about whether this is a good idea or not."